2AZ43-KW885.1 Channel HOME Theater System

Horn frequency response: 20Hz-20KHz

MOSWS INTERNATIONAL LIMITED U.S. Agent Designation for Service of Process (Applicant and U.S. Agent are Separate Parties) TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA ATTENTION: FCC Certification – Section 2.911(d)(7) Information Designated U.S. Agent Company Name: ANTEK SERVICE INC FRN: 0033437609 Contact Name: Shirley Kwok Address: 901 N PENNSYLVANIA ST STE O DENVER, CO 80203Unite States Telephone No: +01303-8006306 Email: [email protected] This letter is to confirm that we (“the Designated U.S. Agent) have accepted the responsibility to act as the Designated U.S. Agent for Service of Process as required by section 47 CFR 2.911(d)(7) on behalf of the Applicant noted below. U.S. Agent Signature: Date: 2025-09-01 Signed by (Printed Name/Title): 6KLUOH\.ZRN0DQDJHU The Applicant acknowledges that they must maintain an agent for no less than one year after terminating all marketing and importation OR the conclusion of any Commission-related proceeding involving the equipment. The applicant further acknowledges their responsibility to inform the FCC whenever the Designated U.S. Agent information above changes. Applicant Company name: MOSWS INTERNATIONAL LIMITED FRN: 0030976781 FCC ID: 2AZ43-KW88 Contact Name: Guogui Huang Address: FLAT/RM 07 BLK B 5/F KING YIP FACTORY BUILDING 59 KING YIP STREET KWUN TONG HongKong, CHINA Telephone No: +86 13699866756 Email: HORQJ#HQNRUQHW Applicant Signature: Date: 2025-09-01 Signed by (Printed Name/Title): Guogui Huang /Manager

(MOSWS INTERNATIONAL LIMITED) (2025.09.04) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: 2AZ43-KW88) [MOSWS INTERNATIONAL LIMITED] (“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. We also certify that, as of the date of the filing of the application, the equipment does not utilize cyber-security or anti-virus software from Kaspersky Lab, Inc, or any of its successors and assignees, which is also on the “covered list”. Sincerely, (Applicant signature) (Applicant printed name) Guogui Huang (MOSWS INTERNATIONAL LIMITED) (2025.09.04) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID: 2AZ43-KW88) [MOSWS INTERNATIONAL LIMITED] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Sincerely, (Applicant signature) (Applicant printed name) Guogui Huang

MOSWS INTERNATIONAL LIMITED 2025.09.04 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: 5.1 Channel HOME Theater System Trademark: Bobtot MODEL : KW88 KW79, H7901, H7920 FCC ID: 2AZ43-KW88 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 - Block Diagram - Schematics - Operational Description required to be submitted with this application be permanently withheld from public review. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Please contact me if there is any information you may need. Sincerely, Client’s signature: Client’s name / title : Guogui Huang/Manager Contact information / address: FLAT/RM 07 BLK B 5/F KING YIP FACTORY BUILDING 59 KING YIP STREET KWUN TONG HongKong,CHINA

MOSWS INTERNATIONAL LIMITED 2025.09.04 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd 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). This agreement expires one year from the current date. Sincerely, Client’s signature: Client’s name / title : Guogui Huang/Manager Contact information / address: FLAT/RM 07 BLK B 5/F KING YIP FACTORY BUILDING 59 KING YIP STREET KWUN TONG HongKong,CHINA

MOSWS INTERNATIONAL LIMITED Model Difference 2025.09.04 EUT NAME: 5.1 Channel HOME Theater System MODEL : KW88 KW79, H7901, H7920 FCC ID: 2AZ43-KW88 All the model are the same circuit and RF module, except model names. The EUT has two built-in power supplies from different manufacturers. Difference tests for Radiated emissions and Conducted emission were conducted. Power supply manufacturer 1: SHENZHEN TONAL ELECTRONIC TECHNOLOGY CO; LTD Power supply manufacturer 2: Guangzhou Qida Electronic Technology Co., Ltd. Regards Sincerely Client’s signature: Client’s name / title : Guogui Huang/Manager Contact information / address: FLAT/RM 07 BLK B 5/F KING YIP FACTORY BUILDING 59 KING YIP STREET KWUN TONG HongKong,CHINA

Report No.: BCTC2506391408E External Photos Report No.: BCTC2506391408E Report No.: BCTC2506391408E Report No.: BCTC2506391408E

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1 }This device may not cause harmful interfe「 ence, and (2}This device must accept any interference received, including interfe「 ence that may cause undesired operation

Report No.: BCTC2506391408E Internal Photos Report No.: BCTC2506391408E Report No.: BCTC2506391408E BT Antenna Report No.: BCTC2506391408E SHENZHEN TONAL ELECTRONIC TECHNOLOGY CO;LTD Report No.: BCTC2506391408E SHENZHEN TONAL ELECTRONIC TECHNOLOGY CO;LTD Guangzhou Qida Electronic Technology Co., Ltd. Report No.: BCTC2506391408E Guangzhou Qida Electronic Technology Co., Ltd. Report No.: BCTC2506391408E Report No.: BCTC2506391408E Report No.: BCTC2506391408E

FCC §15.247 (i), §2.1091 – RF Exposure FCC ID: 2AZ43-KW88 Applied procedures / limit According to FCC §15.247(i) and §1.1307(b)(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 level in excess of the Commission’s guidelines. Limits for Occupational / Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842 / f 4.89 / f (900 / f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-100,000 5 6 Note: ƒ is frequency in MHz * = Power density limit is applicable at frequencies greater than 100 MHz Limits for General Population / Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-100,000 1.0 30 Note: f = frequency in MHz * = Plane-wave equivalent power density MPE PREDICTION Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01 Where: S = power density P = power input to antenna G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna, R=0.2m TEST RESULTS Conclusion: For the max result: 0.00037≤ 1.0, compliance with FCC's RF Exposure Tune up Produce power Maximum peak output power (dBm) Output power to antenna (mW) Antenna Gain (numeric) Power Density (S) (mW/ cm2) Limit (mW/ cm2) Result BT 0±1 1 1.26 1.479 (1.7dBi) 0.00037 1 Pass

Manufacturer: SHENZHEN CITY ENKOR ELECTRONICS LTD.

No.：BCTC/RF-ICT-005 Page: 1 of 89 Edition：C.0 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2506391408E Applicant: MOSWS INTERNATIONAL LIMITED Product Name: 5.1 Channel HOME Theater System Test Model: KW88 Tested Date: 2025-06-20 to 2025-08-13 Issued Date: 2025-08-13 Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 2 of 89 Edition：C.0 FCC ID:2AZ43-KW88 The test report is effective only with both signature and specialized stamp.This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen BCTC Testing Co., Ltd, this report can’t be reproduced except in full.The tested sample(s) and the sample information are provided by the client. Product Name: 5.1 Channel HOME Theater System Trademark: Bobtot Model/Type Reference: KW88 KW79, H7901, H7920 Prepared For: MOSWS INTERNATIONAL LIMITED Address: FLAT/RM 07 BLK B 5/F KING YIP FACTORY BUILDING 59 KING YIP STREET KWUN TONG HongKong,CHINA Manufacturer: GANZHOU CITY MOSWS ELECTRONICS LTD Address: South of Jinlingxi Road,East of Qifengshan Road,Ganzhou development area Ganzhou city,Jiangxi province,China. Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Zhancheng, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China. Sample Received Date: 2025-06-20 Sample Tested Date: 2025-06-20 to 2025-08-13 Issue Date: 2025-08-13 Report No.: BCTC2506391408E Test Standards: FCC Part15.247 ANSI C63.10-2013 Test Results: PASS Remark: This is Bluetooth Classic radio test report. Tested by: Approved by: Kelsey Tan/ Project Handler Zero Zhou/Reviewer Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 3 of 89 Edition：C.0 Table Of Content Test Report Declaration Page 1. Version .................................................................................................................. 5 2. Test Summary ....................................................................................................... 6 3. Measurement Uncertainty ..................................................................................... 7 4. Product Information And Test Setup ..................................................................... 8 4.1 Product Information ............................................................................................... 8 4.2 Test Setup Configuration ...................................................................................... 9 4.3 Support Equipment ............................................................................................... 9 4.4 Channel List ........................................................................................................ 10 4.5 Test Mode ........................................................................................................... 10 4.6 Table Of Parameters Of Text Software Setting ................................................... 10 5. Test Facility And Test Instrument Used ............................................................... 11 5.1 Test Facility ......................................................................................................... 11 5.2 Test Instrument Used .......................................................................................... 11 6. Conducted Emissions .......................................................................................... 13 6.1 Block Diagram Of Test Setup .............................................................................. 13 6.2 Limit .................................................................................................................... 13 6.3 Test procedure .................................................................................................... 13 6.4 EUT operating Conditions ................................................................................... 13 6.5 Test Result .......................................................................................................... 14 7. Radiated emissions ............................................................................................. 18 7.1 Block Diagram Of Test Setup .............................................................................. 18 7.2 Limit .................................................................................................................... 19 7.3 Test procedure .................................................................................................... 20 7.4 EUT operating Conditions ................................................................................... 21 7.5 Test Result .......................................................................................................... 21 8. Radiated Band Emission Measurement And Restricted Bands Of Operation ..... 29 8.1 Block Diagram Of Test Setup .............................................................................. 29 8.2 Limit .................................................................................................................... 29 8.3 Test procedure .................................................................................................... 30 8.4 EUT operating Conditions ................................................................................... 30 8.5 Test Result .......................................................................................................... 31 9. Spurious RF Conducted Emissions ..................................................................... 32 9.1 Block Diagram Of Test Setup .............................................................................. 32 9.2 Limit .................................................................................................................... 32 9.3 Test procedure .................................................................................................... 32 9.4 Test Result ........................................................…

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Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 55 of 89 Edition：C.0 Test Graphs -20dB Bandwidth NVNT 1-DH1 2402MHz -20dB Bandwidth NVNT 1-DH1 2441MHz Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 56 of 89 Edition：C.0 -20dB Bandwidth NVNT 1-DH1 2480MHz -20dB Bandwidth NVNT 2-DH1 2402MHz Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 57 of 89 Edition：C.0 -20dB Bandwidth NVNT 2-DH1 2441MHz -20dB Bandwidth NVNT 2-DH1 2480MHz Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 58 of 89 Edition：C.0 -20dB Bandwidth NVNT 3-DH1 2402MHz -20dB Bandwidth NVNT 3-DH1 2441MHz Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 59 of 89 Edition：C.0 -20dB Bandwidth NVNT 3-DH1 2480MHz Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 60 of 89 Edition：C.0 11. Maximum Peak Output Power 11.1 Block Diagram Of Test Setup 11.2 Limit FCC Part15 (15.247) , Subpart C Section Test Item Limit Frequency Range (MHz) Result 15.247(b)(1) Peak Output Power 0.125 watt or 21dBm 2400-2483.5 PASS 11.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 2MHz. VBW = 6MHz. Sweep = auto; Detector Function = Peak. 3. Keep the EUT in transmitting at lowest, medium and highest channel individually. Record the max value. 11.4 Test Result Temperature: 26 °C Relative Humidity: 54%RH Pressure: 101KPa Test Voltage : AC 120V/60Hz Condition Mode Frequency (MHz) Conducted Power (dBm) Limit (dBm) Verdict NVNT 1-DH1 2402 -0.15 21 Pass NVNT 1-DH1 2441 -2.28 21 Pass NVNT 1-DH1 2480 -4.76 21 Pass NVNT 2-DH1 2402 -0.23 21 Pass NVNT 2-DH1 2441 -2.37 21 Pass NVNT 2-DH1 2480 -4.85 21 Pass NVNT 3-DH1 2402 -0.12 21 Pass NVNT 3-DH1 2441 -2.16 21 Pass NVNT 3-DH1 2480 -4.73 21 Pass Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 61 of 89 Edition：C.0 Test Graphs Power NVNT 1-DH1 2402MHz Power NVNT 1-DH1 2441MHz Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 62 of 89 Edition：C.0 Power NVNT 1-DH1 2480MHz Power NVNT 2-DH1 2402MHz Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 63 of 89 Edition：C.0 Power NVNT 2-DH1 2441MHz Power NVNT 2-DH1 2480MHz Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 64 of 89 Edition：C.0 Power NVNT 3-DH1 2402MHz Power NVNT 3-DH1 2441MHz Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 65 of 89 Edition：C.0 Power NVNT 3-DH1 2480MHz Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 66 of 89 Edition：C.0 12. Hopping Channel Separation 12.1 Block Diagram Of Test Setup 12.2 Limit Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 20 dB bandwidth of the hopping channel, whichever is greater. Alternatively, frequency hopping systems operating in the 2400-2483.5 MHz band may have hopping channel carrier frequencies that are separated by 25 kHz or two-thirds of the 20 dB bandwidth of the hopping channel, whichever is greater, provided the systems operate with an output power no greater than 0.125W. 12.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 30kHz. VBW = 100kHz , Span = 2.0MHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. Use the marker-delta function to determine the separation between the peaks of the adjacent channels. The limit is specified in one of the subparagraphs of this Section Submit this plot. 12.4 Test Result Mode Test Channel Separation (MHz) Limit(MHz) Result 1-DH1 Low 1.010 0.598 PASS 1-DH1 Middle 1.016 0.660 PASS 1-DH1 High 1.036 0.643 PASS 2-DH1 Low 1.000 0.829 PASS 2-DH1 Middle 1.000 0.837 PASS 2-DH1 High 1.004 0.843 PASS 3-DH1 Low 1.000 0.840 PASS 3-DH1 Middle 1.002 0.844 PASS 3-DH1 High 0.998 0.846 PASS Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 67 of 89 Edition：C.0 Test Graphs CFS NVNT 1-DH1 2402MHz CFS NVNT 1-DH1 2441MHz Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 68 of 89 Edition：C.0 CFS NVNT 1-DH1 2480MHz CFS NVNT 2-DH1 2402MHz Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 69 of 89 Edition：C.0 CFS NVNT 2-DH1 2441MHz CFS NVNT 2-DH1 2480MHz Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 70 of 89 Edition：C.0 CFS NVNT 3-DH1 2402MHz CFS NVNT 3-DH1 2441MHz Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 71 of 89 Edition：C.0 CFS NVNT 3-DH1 2480MHz Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 72 of 89 Edition：C.0 13. Number Of Hopping Frequency 13.1 Block Diagram Of Test Setup 13.2 Limit Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. 13.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 100kHz. VBW = 300kHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. It may prove necessary to break the span up to sections. in order to clearly show all of the hopping frequencies. The limit is specified in one of the subparagraphs of this Section. 4. Set the spectrum analyzer: Start Frequency = 2.4GHz, Stop Frequency = 2.4835GHz. Sweep=auto; 13.4 Test Result Condition Mode Hopping Number Limit Verdict NVNT 1-DH1 79 15 Pass NVNT 2-DH1 79 15 Pass NVNT 3-DH1 79 15 Pass Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 73 of 89 Edition：C.0 Test Graphs Hopping No. NVNT 1-DH1 2441MHz Hopping No. NVNT 2-DH1 2441MHz Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 74 of 89 Edition：C.0 Hopping No. NVNT 3-DH1 2441MHz Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 75 of 89 Edition：C.0 14. Dwell Time 14.1 Block Diagram Of Test Setup 14.2 Limit Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. The average time of occupancy on any channel shall not be greater than 0.4 seconds within a period of 0.4 seconds multiplied by the number of hopping channels employed. Frequency hopping…

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Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 87 of 89 Edition：C.0 17. EUT Test Setup Photographs Conducted emissions Radiated Measurement Photos Report No.: BCTC2506391408E No.：BCTC/RF-ICT-005 Page: 88 of 89 Edition：C.0