2AJVKKH131MICWireless Karaoke Microphone

User Manual Manual De Usuario True Wireless Party Speaker With Two Wireless Microphones Altavoz inalámbrico para fiestas con dos micrófonos inalámbricos KH131BK EN ... 01 08 ... ES User Manual Buttons and Parts Volume +/Next track button Play/Pause button Mode button Micro USB charging port USB Port TF Card Slot AUX-IN Port/LED Indicator Handle Power Switch SpeakerRGB Light Volume - / Previous track button English EN 01 Microphone Power button Voice Control button Next track/Increase volume Previous track/Decrease volume USB-C Charging port LED indicator Charging Note: When the battery power level is low, the RGB light may not work, and the volume will turn lower, indicating that it requires charging. When the speaker's battery power gets used up, it will automatically power off. Slide the Power Switch to the "ON" position to turn on the speaker. Once the speaker is on, it will default to Bluetooth mode, and the RGB light will be on. To turn off the speaker, slide the Power Switch to the "OFF" position, and the RGB light will be off. Steady red (LED indicator) Charging Fully charged Charging time Off (LED indicator) 3 hours Bluetooth Mode Bluetooth connection with your device When the speaker is on, it will automatically enter Bluetooth pairing mode (If the speaker is in other playback modes, repeatedly press the Mode button M to enter Bluetooth mode). Turn on Bluetooth in your device’s settings and search for ‘‘KH131BK’’, then tap ‘‘KH131BK’’ to connect. Enter Bluetooth pairing mode Connected to a device (Successfully paired with your device). Quickly flashing blue (LED indicator) Steady blue (LED indicator) Connected tone notification Bluetooth mode tone notification ? EN 01 Powering on/off ? EN 02 NOTES: 1. Before pairing, ensure the speaker is not currently connected to another device. If it is, press and hold the button for 2 seconds to unpair the speaker from the current connected device. 2. The speaker will automatically be paired with your last successfully connected media device the next time it is turned on. 3. If there is no Bluetooth connection on the speaker for more than 5 minutes, it will automatically turn off. For Music Playback Play / PausePress the Play/Pause button once Next track Press the Next Track button + once Previous trackPress the Previous Track button once Volume up Press and hold the Volume Up button + Volume downPress and hold the Volume Down button Note: When you receive or make a call, the music that is playing will automatically pause, and the person’s voice on the other end of the line can only be heard through your phone. When you end the call, the music will resume. EN 03 Singing along to the music (Karaoke mode) Pair the Microphone with the Speaker 1. Pair the speaker with your device following the instructions in “ Bluetooth connection with your device” section. 2. Bring the microphone and the speaker close to each other, turn on the microphone, and it will automatically enter Bluetooth pairing mode and pair with the speaker. Once they are successfully paired, the LED indicator on the microphone will turn steady blue. Enter Bluetooth pairing mode Connected to a device (Successfully paired with your device). Quickly flashing blue (LED indicator) Steady blue (LED indicator) Next track Play/PauseQuickly press the Power button twice. Previous track Change voice modulation mode Add/Remove vocals Press and hold the button. Press and hold the button. Press the button once. Press and hold the button. Controls in singing (using the buttons on the microphone) Volume up (For speaking)Press the button once. Volume down (For speaking)Press the button once. Next radio station Press the Next Track button + once Previous radio stationPress the Previous Track button once Volume up Press and hold the Volume Up button + Volume downPress and hold the Volume Down button Repeatedly press the Mode button M to switch to the FM Radio mode. Insert the included Micro USB charging cable into the charging port as an antenna to adjust for better signals. Press the Play / Pause button to automatically search for the radio stations, then all available radio stations will be stored by the preset channel number in order, and the first preset radio station will broadcast automatically. While searching for the radio stations, press the Play / Pause button again to stop searching and broadcast the current frequency radio. FM Radio mode Playing from external device USB / TF card/AUX mode The speaker will take the newly connected USB disk, TF card, or Audio out device as the first priority for the music playback. If the USB disk, TF card, and Audio Out device are connected to the speaker at the same time, you can repeatedly press the Mode button M to toggle these playback modes, and the playback mode will change as follows: Note: Under AUX mode, you can mute the music playback sound, adjust the volume level on the speaker, and for other music playback controls, you can operate them through your media device. Under any mode, insert a TF card/USB disk into the TF card slot/USB port of your speaker, or connect the AUX cable(not included) to the AUX In port of the speaker and to the Audio Out of your media device (such as your phone). It will immediately play the music files in the TF card, USB disk, or Audio Out device. The music playback controls are the same as the Bluetooth mode. EN 03EN 04 Under any mode (except FM Radio mode), if the RGB light is off, press and hold the Mode button M to enable the light mode. There are six light modes available, repeatedly press and hold the Mode button M to toggle between the six light modes and light off mode. RGB Light Mode TF card (supports up to 16GB) USB Mode TF Card Mode FM Radio Mode Bluetooth Mode AUX Mode Safety stament Safety Precautions 1. Avoid dropping. 2. Do not disassemble this device. 3. Do not expose this device to rain or moisture or submerge in water. Specifications I Model NumberKH131BK Model NameTure Wireless Party Speaker Power I…

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Foto Electric Supply Co., INC. Covered Equipment Certification Attestation Letter 11/21/2025 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2AJVKKH131MIC Foto Electric Supply Co., INC. (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. Foto Electric Supply Co., INC. (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Foto Electric Supply Co., INC. (“the applicant”) certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Signed: Printed name: Jared Melnicoff Title: Director Sourcing Company Name: Foto Electric Supply Co., INC. Date: 11/21/2025

Foto Electric Supply Co., INC. * the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process. U.S. Agent Designation for Service of Process - Certification Attestation Letter 11/21/2025 TO: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTN.: Reviewing Engineer FCC ID: 2AJVKKH131MIC FRN of applicant: 0025902875 Per section 2.911(d)(7) of the FCC rules, [ Foto Electric Supply Co., INC.] (“the applicant”) certifies that the equipment for which authorization is sought is designated to the following U.S. agent* for service of process: Company Name: Foto Electric Supply Co., INC. FCC Registration Number (FRN): 0025902875 Physical U.S. Company Address: 1 Rewe St. Brooklyn, New York 11211 United States Contact Person: Jared Melnicoff Agent Email Address: [email protected] The above contact person accepts the obligation for service of process. The applicant accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Signed Signed: Printed name: Jared Melnicoff Title: Director Sourcing Company Name: Foto Electric Supply Co., INC. Date: 11/21/2025 Agent Signed (if different from Applicant): Signed: Printed name: Jared Melnicoff Title: Director Sourcing Company Name: Foto Electric Supply Co., INC. Date: 11/21/2025

Foto Electric Supply Co., INC. Request for Long-Term Confidentiality Letter-FCC (2025/11/21) RE: CONFIDENTIALITY REQUEST FOR (EUT NAME: Wireless Karaoke Microphone /MODEL KH131BK, FCC ID: 2AJVKKH131MIC) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the (Schematics, Operational Description, Block Diagrams) required to be submitted with this application be permanently withheld from public review. The documents listed above contain trade secrets that are treated as confidential by us. Substantial competitive harm to us could result should they be made available to the public. Please contact me if there is any information you may need. Sincerely, Signature Printed Name: Jared Melnicoff Company: Foto Electric Supply Co., INC. Job Title: Director Sourcing Email: [email protected] Telephone: 212-260-0666

Foto Electric Supply Co., INC. Date: 2025-11-21 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 RE: LETTER OF AGENT AUTHORIZATION FCC ID: 2AJVKKH131MIC To Whom It May Concern: We, the undersigned, hereby authorize Compliance Testing, LLC to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). Signature Printed Name: Jared Melnicoff Company: Foto Electric Supply Co., INC. Job Title: Director Sourcing Email: [email protected] Telephone: 212-260-0666

FCC ID: 2AJVKKH131MIC External photos FCC ID: 2AJVKKH131MIC FCC ID: 2AJVKKH131MIC

Made in China 23657 FCC ID: 2AJVKKH131MIC Model: KH131BK Wireless Karaoke Microphone DC 5V

FCC ID: 2AJVKKH131MIC Internal photos FCC ID: 2AJVKKH131MIC FCC ID: 2AJVKKH131MIC RF Chip RF Antenna

Report No.: NTC2509197F01 Dongguan Nore Test ing Center Co., Ltd. Address: Building D, Gaosheng Science and Technology park, Hongtu road, Nancheng district, Dongguan city , Guangdong province, China Web: www.ntc-c.com Tel:+86-769-2202 2444 Fax:+86-769-2202 2799 Page 1 of 9 RF EVALUATION TEST REPORT Applicant......................... : Foto Electric Supply Co., INC. Address........................... : 1 Rewe St. Brooklyn, New York 11211 United States Manufacturer.................... : Foto Electric Supply Co., INC. Address.......................... : 1 Rewe St. Brooklyn, New York 11211 United States Factory ......................... : Foto Electric Supply Co., INC. Address ......................... : 1 Rewe St. Brooklyn, New York 11211 United States Product Name.................. : Wireless Karaoke Microphone Brand Name..................... : Chargeworx, COBY Model No. ........................ : KH131BK FCC ID............................ : 2AJVKKH131MIC Measurement Standard...... : 47 CFR Part 1, 1.1307 Receipt Date of Samples.... : August 20, 2025 Date of Tested.................. : August 20, 2025 to August 25, 2025 Date of Report.................. : August 25, 2025 This report shows that above equipment is technically compliant with the requirements of the standards above. All test results in this report apply only to the tested sample(s). Without prior written approval of Dongguan Nore Testing Center Co., Ltd, this report shall not be reproduced except in full. Prepared by Alina Guo / Project Engineer Approved by Iori Fan / Authorized Signatory Report No.: NTC2509197F01 Page 2 of 9 Table of Contents 1. General Description of EUT ................................................................................................................................ 4 2. Test Facility and Location ................................................................................................................................... 6 3. Applicable Standards and References ................................................................................................................ 7 4. Maximum Permissible Exposure Limit ................................................................................................................ 8 5. RF Exposure Evaluation Results ........................................................................................................................ 9 Report No.: NTC2509197F01 Page 3 of 9 Revision History Report Number Description Issued Date NTC2509197F01 Initial Issue 2025-08-25 Report No.: NTC2509197F01 Page 4 of 9 1. G eneral Description of EUT Product Information Product Name: Wireless Karaoke Microphone Main Model Name: KH131BK Additional Model Name: N/A Model Difference: N/A S/N: 23657 Brand Name: Chargeworx, COBY Hardware Version: V1.0 Software Version: V1.0 Rating: DC 5V come from adapter DC 3.7V come fro m internal battery Typical Arrangement: Table-top I/O Port: Refer to the user manual Accessories Information Adapter: N/A Cable: N/A Other: N/A Additional Information Note: N/A Remark: All the information above are provided by the manufacturer. More detailed feature of the EUT please refers to the user manual. Report No.: NTC2509197F01 Page 5 of 9 Technical Specification (BLE) Bluetooth Version: V5.3 Frequency Range: 2402-2480MHz Modulation Type: GFSK Number of Channel: 40 Channel Space: 2MHz Antenna Type: PCB antenna Number of Antenna 1 Antenna Gain: -0.58 dBi (Declared by the manufacturer) RF PHY Support: 1Mbps Note: This product only supports BLE technology. Report No.: NTC2509197F01 Page 6 of 9 2. Test Facility and Location Test Site : Dongguan Nore Testing Center Co., Ltd. (Dongguan NTC Co., Ltd.) Accreditations and Authorizations : The Laboratory has been assessed and proved to be in compliance with CNAS/CL01 Listed by CNAS, August 13, 2018 The Certificate Registration Number is L5795. The Certificate is valid until August 13, 2030 The Laboratory has been assessed and proved to be in compliance with ISO17025 Listed by A2LA, November 0 1, 2017 The Certificate Registration Number is 4429.01 The Certificate is valid until December 31, 2 025 Listed by FCC, November 06, 2017 Test Firm Registration Number: 907417 Listed by Industry Canada, June 08, 2017 The Certificate Registration Number. Is 46405-9743A Test Site Location : Building D, Gaosheng Science and Technology Park, Hongtu Road, Nancheng District, Dongguan City, Guangdong Province, China Report No.: NTC2509197F01 Page 7 of 9 3. Applicable Standards and References According to the specifications of the manufacturer, the EUT must comply with the requirements of the following standards: Test Standards: 47 CFR Part 1, 1.1307 KDB447498 D01 V06 Report No.: NTC2509197F01 Page 8 of 9 4. Maximum Permissible Exposure Limit According to §15.247(i) and §1.1307b(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy levels in excess of the Commission’s guidelines. See KDB 447498 D01 General RF Exposure Guidance v05, section 4.3.1. The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, 16 where ·f(GHz) is the RF channel transmit frequency in GHz ·Power and distance are rounded to the nearest mW and mm before calculation17 ·The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. Report No.: NTC2509197F01 Page 9 of 9 5. RF Exposure Evaluation Results Single RF Source Mode Channel Frequency (MHz) Max Output power (dBm) Ma…

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Report No.: NTC2509197FV00 Dongguan Nore Testing Center Co., Ltd. Address: Building D, Gaosheng Science and Technology park, Hongtu road, Nancheng dist rict, Dongguan city, Guangdong province, China Web: www.ntc-c.com Tel:+86-769-2202 2444 Fax:+86-769-2202 2799 Page 1 of 34 FCC RADIO TEST REPORT Applicant.......................... : Foto Electric Supply Co., INC. Address............................ : 1 Rewe St. Brooklyn, New York 11211 United States Manufacturer..................... : Foto Electric Supply Co., INC. Address............................ : 1 Rewe St. Brooklyn, New York 11211 United States Factory............................ : Foto Electric Supply Co., INC. Address........................... : 1 Rewe St. Brooklyn, New York 11211 United States Product Name................... : Wireless Karaoke Microphone Brand Name...................... : Chargeworx, COBY Model No. ........................ : KH131BK FCC ID............................ : 2AJVKKH131MIC Measurement Standard....... : 47 CFR FCC Part 15, Subpart C (Section 15.247) Receipt Date of Samples..... : August 20, 2025 Date of Tested................... : August 20, 2025 to August 25, 2025 Date of Report................... : August 25, 2025 This report shows that above equipment is technically compliant with the requirements of the standards above. Al l test results in this report apply only to the tested sample(s). Without prior written approval of Dongguan Nore Testing Center Co., Ltd, this report shall not be reproduced except in full. Prepared by Alina Guo / Project Engineer Approved by Iori Fan / Authorized Signatory Report No.: NTC2509197FV00 Page 2 of 34 Table of Contents 1. Summary of Test Result ...................................................................................................................................... 4 2. General Description of EUT ................................................................................................................................ 5 3. Test Channels and Modes Detail ........................................................................................................................ 8 4. Configuration of EUT ........................................................................................................................................... 8 5. Modification of EUT ............................................................................................................................................. 8 6. Description of Support Device ............................................................................................................................. 9 7. Test Facility and Location ................................................................................................................................. 10 8. Applicable Standards and References .............................................................................................................. 11 9. Deviations and Abnormalities from Standard Conditions ................................................................................. 11 10. Test Conditions ............................................................................................................................................... 12 11. Measurement Uncertainty ............................................................................................................................... 13 12. Sample Calculations ....................................................................................................................................... 14 13. Test Items and Results ................................................................................................................................... 15 13.1 Conducted Emissions Measurement ............................................................................................................ 15 13.2 Maximum Conducted Output Power Measurement ...................................................................................... 17 13.3 6dB Bandwidth Measurement ....................................................................................................................... 19 13.4 Power Spectral Density Measurement ......................................................................................................... 22 13.5 Band Edge and Conducted Spurious Emissions Measurement ................................................................... 24 13.6 Radiated Spurious Emissions and Restricted Bands Measurement ............................................................ 29 13.7 Antenna Requirement ................................................................................................................................... 33 14. Test Equipment List......................................................................................................................................... 34 Report No.: NTC2509197FV00 Page 3 of 34 Revision History Report Number Description Issued Date NTC2509197FV00 Initial Issue 2025-08-25 Report No.: NTC2509197FV00 Page 4 of 34 1. Summary of Test Result FCC Rules Description of Test Result Remarks §15.207 (a) AC Power Conducted Emission N/T Refer to additional test report. §15.247(b)(3) Maximum Conducted Output Power PASS --- §15.247(a)(2) 6dB Bandwidth PASS --- §15.247(e) Power Spectral Density PASS --- §15.247(d) Band Edge and Conducted Spurious Emissions PASS --- §15.247(d), §15.209, §15.205 Radiated Spurious Emissions and Restricted Bands N/T Refer to additional test report. §15.203 Antenna Requirement PASS --- Note: N/ T means not tested. Report No.: NTC2509197FV00 Page 5 of 34 2. General D escription of EUT Product Information Product Name: Wireless Karaoke Microphone Main Model Name: KH131BK Additional Model Name: N/A Model Difference: N/A S/N: 23657 Brand Name: Chargeworx, COBY Hardware Version: V1.0 Software Version: V1.0 Rating: DC 5V come from adapter DC 3.7V come from internal battery Typical Arr…

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Invert ed F Antenna Specification Summary ITEMANT SPEC Mo del Name 2.4G ANT Ho rizontalVertical 2400MHz 2 450MHz2500MHz2400MHz 2 450MHz 2500MHz Cent er Frequency -1.26 -0.76 -0.58 -5.25 -2.46 -1.86 MAX. Gain -0.58dBi Po larizationHorizontal and Vertical A zimuth Beam Pattern Omni-directional Impedance50 Ohm A ntenna Length 38.20mm M anufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length (mm ) Horizontal: 2400 MHz 2450 MHz 2500 MHz Po wer (dBm) Max: 0 Min: -40 Scale: 5/div Gain (dBi) Freque ncy (MHz) MaxMinAvg 2 400-1.26174-30.0801-7.18716 2 450-0.765802-36.5604-7.48023 2 500-0.585582-22.0315-6.59127 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Gain (dB) Frequency (MHz) MaxMinAvg 2400-5.2537-22.1424-12.4294 2450-2.4652-24.5837-10.4702 2500-1.86120-29.5214-9.20432 ANT Test Labs：Attestation of Global Compliance Co., Ltd.

Page 1 of 38 Report No.ESTE-R2510058 FCC PART 15C TEST REPORT FOR CERTIFICATION On Behalf of Foto Electric Supply Co., INC. Wireless Karaoke Microphone Model Number: KH131BK FCC ID: 2AJVKKH131MIC Applicant: Foto Electric Supply Co., INC. Address: 1 Rewe St. Brooklyn, New York 11211 United States Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2510058 Date of Test: Sep. 28, 2025~ Oct. 13, 2025 Date of Report: Oct. 15, 2025 Page 2 of 38 Report No.ESTE-R2510058 TABLE OF CONTENTS Description Page TEST REPORT VERIFICATION .......................................................................................................... 3 1. GENERAL INFORMATION ................................................................................................................... 4 1.1. Description of Device (EUT) ............................................................................................................ 4 1.2. Antenna Information ......................................................................................................................... 4 1.3. Information of RF Cable ................................................................................................................... 4 2. SUMMARY OF TEST ........................................................................................................................... 5 2.1. Summary of test result ..................................................................................................................... 5 2.2. Test Facilities ..................................................................................................................................... 6 2.3. Measurement uncertainty ................................................................................................................ 7 2.4. Assistant equipment used for test .................................................................................................. 7 2.5. Block Diagram ................................................................................................................................... 7 2.6. Test Mode .......................................................................................................................................... 8 2.7. Power Setting of Test Software ...................................................................................................... 8 2.8. Channel List ....................................................................................................................................... 9 2.9. Test Equipment List ........................................................................................................................ 10 3. RADIATED SPURIOUS EMISSIONS AND BAND EDGE ...................................................................... 11 3.1. Limit ................................................................................................................................................... 11 3.2. Test Setup ........................................................................................................................................ 12 3.3. Spectrum Analyzer Setting ............................................................................................................ 13 3.4. Test Procedure ................................................................................................................................ 14 3.5. Test Result ....................................................................................................................................... 15 4. AC POWER LINE CONDUCTED EMISSIONS .................................................................................... 27 4.1. Limit ................................................................................................................................................... 27 4.2. Test Setup ........................................................................................................................................ 27 4.3. Spectrum Analyzer Setting ............................................................................................................ 27 4.4. Test Procedure ................................................................................................................................ 27 4.5. Test Result ....................................................................................................................................... 28 5. TEST SETUP PHOTO ................................................................................................................. 30 6. EUT PHOTO ................................................................................................................................. 32 Page 4 of 38 Report No.ESTE-R2510058 1.GENERAL INFORMATION 1.1.Description of Device (EUT) Note: For a more detailed features description, please refer to the manufacturer’s specifications or the user's manual. 1.2.Antenna Information Ant No. Brand Model Name Antenna Type Connector Gain (dBi) 1 - - PCB - -0.58 Note: 1.The antenna gain is declared by the customer and the laboratory is not responsible for the accuracy of the antenna gain. 2.The test results of this report only apply to the sample as received 1.3.Information of RF Cable Cable Loss(dB) Provided by 1.0 Foto Electric Supply Co., INC. Note: 1.The customer declared the loss value of the RF Cable. and the test results of this report only apply to the sample as received. 2.The laboratory is not responsible for the accuracy of the cable loss. Product Name : Wireless Karaoke Microphone Model Number : KH131BK Software Version : V1.0 Hardware Version : V1.0 Operation frequency : 2402MHz~2480MHz Number of chan…

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