2ADDH-43239Bluetooth Headphone

Welcome to use Thank you for your purchasing our MP43239 active noise cancelling (ANC) wireless charging headphone. MP43239（ANC version）is a professional noise cancelling headphone for amazing music listening，while ANC function allows you to keep the low frequency noise out of the ear at any time, more quiet. This guide is to introduce the MP43239 and list the matters need attention. Before setting up or use the product, please carefully read thefollowing product information, which is important. Product Specifications Bluetooth Headphone Bluetooth Version V5.0 Talking Time 25H Speaker 32Ω 40mm 20-20KHZ Music Playing Time 25H Standby Time About 45 DAYS ANC Music Playing Time 12H Frequency 2402MHZ-2480MHZ Charge Current Less than 1A Microphone Sensitivity:-36 ±4dB Frequency:100-10 KHZ Charge Voltage 5V ANC Function Yes Charging Time 2-3H Protocol Supported HSP HFP A2DP AVRCP Bluetooth Distance 10m Battery Capacity 500 mAh Functions Keys Function： NO. Name Introduction 1 Volume+/Next Track Press it to volume up. Press and hold it to skip to next track. 2 MFB ( Multifunction Button) Power On/Off: Press and hold 2s to power on, press and hold 4s to power off.(Once power on, it enters pairing mode automatically after 10s) Phone Call Control: Press to answer/hang up. Press and hold to refuse. Press two times to redial last outbound phone number.Double click to start the Voice assistant. 3 Volume-/Skip Backward Press to volume down/press and hold to play previous track. 4 Type-C USB After inserting the charging cable, the charging status of the Bluetooth headset is red, and it is fulled with blue light.Suggestion: Do not use headphones when charging. 5 Mic Microphone for calling 6 Active Noise Cancellation Control Press and hold 2s to open/close ANC Function 7 3.5mm Earphone Jack While extra earphone plugged, Bluetooth turns off automatically, and battery, controls, microphone don’t work. Connection 1. To put your headphone in pair mode, press and hold the MFB for 2 seconds until it powers on and enters pairing mode automatically after 10s. LED indicator flashes blue and red alternately. ( Headphone powers off after 5 minutes if no Bluetooth connected) 2. Activate Bluetooth on your phone ( or other devices) and set it to search for new devices. iPhone Settings > Bluetooth > On Android Settings > Bluetooth: On > Scan for devices NOTE: Menus may vary by device 3. Select “MP43239” If necessary, enter four zeros (0000) for pass code and accept connection. Once successfully paired, the headphone LED indicator flashes blue. • Two Phones Connection: Your headphone can pair with two devices simultaneously. After connect Phone A, turn the headphone and Bluetooth on Phone A off. Then restart the headphone and pair with Phone B, and maintain the connection with Phone B. Finally, open Bluetooth on Phone A and select “MP43239” in the menu. Note: The headphone can only play music on one Phone even two phones are successfully connected at the same time. • Wired connection：Use the included audio cable to connect.( Bluetooth turns off automatically, battery, buttons,microphone stop working when in AUX mode ) Noise Cancellation ANC button on the left side（ANC：Active Noise Cancelling): Press and hold 2s to activate ANC Function active noise cancelling,and the led turns green. Press and hold 2s to close the ANC function with the led off. Charging 1.Wired Charging: Please plug Type-C USB into headphone charging port and connect the other side with USB wall charging adapter or computer. LED indicator turns red while charging, and turns blue when fully charged. (Headphone reminds you battery low every 15 minutes when the battery power is below 10%) Trouble Shooting Problem Remedy 1. The indicator blinks red quickly(interval 2S) or continuously? It means that the battery is low. Please charge the headphone as soon as possible! 2. Cannot boot? Maybe the battery runs out. Please charge it before starting! 3. No indicator when charging? There may be no charge instructions for the first few Minutes. If the battery is completely exhausted or charged for the first time after not being used for a long period, but the indicator glows red to indicate the charging state after a while. 4. Bluetooth headphone is without sound? ① Make sure Bluetooth headphone is switched on. ② Make sure the music sound output is the Bluetooth device (MP43239). ③ Make sure the Bluetooth headphone and the phone are paired and connected successfully. ④ Make sure the distance between Bluetooth headphone and cellphone is no more than 10 meters/ 32.8ft away. ⑤ Make sure your phone is within the range of signal and without external interference. ⑥ Make sure your phone is not connected to other devices. 5. There is no sound in the headphone when in wired connection? ① Make sure you insert correct 3.5mm audio cable and connect successfully. Note that the headphone buttons and microphones do not work when wired the headphone. ② Make sure cell phone is in normal working condition and without damage. 6. Bluetooth connection is not successful? ① Make sure both the headphone and cell phone Bluetooth devices are open. ② Make sure the headphone enters Bluetooth pairing mode (the indicator blinks blue) ③ Try to ignore the previous connected Bluetooth devices and empty the Bluetooth list. Search the device again. Product Maintenance Please do not use non-original accessories, because it may cause performance degradation, man-made destroy, electrical short circuit and warranty invalid. Please do not disassemble the device by yourself, because it may cause headphone damaged and make the warranty invalid. Please do not put your Bluetooth headphone in a dusty environment. Please do not allow children under 3 years to play by themselves. Please do not place the product in an overheated or super-cooled environment; otherwise, it may not work temporarily or permanently. Please clean your Bluetooth headphone with clean, soft and dry cloth. Please put your Bluetooth headphon…

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Monoprice, Inc 2021.06.28 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: Bluetooth Headphone Trademark: N/A MODEL : 43239 FCC ID: 2ADDH-43239 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 : David Fuge /Sr. Director, Program Management Contact information / address: 1 Pointe Dr Suite# 400 Brea California United States 92821

Monoprice, Inc 2021.06.28 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 : David Fuge/Sr. Director, Program Management Contact information / address: 1 Pointe Dr Suite# 400 Brea California United States 92821

External Photos

Label & label location FCC ID: 2ADDH-43239 Label location

Internal Photos Antenna

RF EXPOSURE EVALUATION METHOD FCC ID: 2ADDH-43239 Applicable standard： In accordance with FCC 47 CFR part 2 (2.1093) this device has been defined as a portable device which is defined as a transmitting device designed to be used so that the radiating structure(s) of the device is/are within 20 centimeters of the body of the user. Portable devices must be evaluated using the specified in FCC 47 CFR part 2 (2.1093) and ANSI/IEEEC95.1-1992. and had been tested in accordance with the measurement methods and procedures specified in IEEE 1528-2003. Per FCC KDB 447498 D01 v06, the 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances s 50 mm are determined by: SAR Test Exclusion Thresholds for 100 MHz – 6 GHz and ≤ 50 mm Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. 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,where f(GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation 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. BT max possible output power (PK,conducted) tune up：5dBm 0dBi logarithmic terms convert to numeric result is nearly 1 5dBm=3.16mW 2402MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]=3.16/5*√2.402=0.98≤3.0 Threshold at which no SAR required is 10mw and ≤ 3.0 for 1-g SAR, Separation distance is 5mm. Modulation Frequency (MHz) Output Power (dBm) Max Antenna Gain (dBi) GFSK 2402 2.772 0 GFSK 2441 3.513 0 GFSK 2480 3.600 0 Pi/4 DQPSK 2402 0.385 0 Pi/4 DQPSK 2441 1.201 0 Pi/4 DQPSK 2480 1.222 0 8DPSK 2402 0.898 0 8DPSK 2441 1.738 0 8DPSK 2480 1.737 0 2441MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]=3.16/5*√2.441=0.99≤3.0 Threshold at which no SAR required is 10mw and ≤ 3.0 for 1-g SAR, Separation distance is 5mm. 2480MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]=3.16/5*√2.48=1.00≤3.0 Threshold at which no SAR required is 10mw and ≤ 3.0 for 1-g SAR, Separation distance is 5mm. Conclusion: No SAR is required.

No.：BCTC/RF-EMC-007 Page: 1 of 68 Edition：A.3 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2106444813E Applicant: Monoprice, Inc Product Name: Bluetooth Headphone Model/Type reference: 43239 Tested Date: 2021-06-07 to 2021-06-17 Issued Date: 2021-06-17 Report No.: BCTC2106444813E No.：BCTC/RF-EMC-007 Page: 2 of 68 Edition：A.3 FCC ID: 2ADDH-43239 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: Bluetooth Headphone Trademark: N/A Model/Type reference: 43239 Prepared For: Monoprice, Inc Address: 1 Pointe Dr Suite# 400 Brea California United States 92821 Manufacturer: Shenzhen SYD Electronics Co., Ltd. Address: 1003, Building B, Anlibang science and technology park, First industrial park, Xitian community, Gongming street, Guangming district, Shenzhen, China Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Tangwei, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: 2021-06-07 Sample tested Date: 2021-06-07 to 2021-06-17 Issue Date: 2021-06-17 Report No.: BCTC2106444813E Test Standards FCC Part15.247 ANSI C63.10-2013 Test Results PASS Remark: This is Bluetooth Classic radio test report. Tested by: Approved by: Willem Wang/Project Handler Zero Zhou/Reviewer Report No.: BCTC2106444813E No.：BCTC/RF-EMC-007 Page: 3 of 68 Edition：A.3 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 ................................................ 8 4.3 Support Equipment ..................................................... 9 4.4 Channel List ........................................................... 9 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 .............................................. 16 7.1 Block Diagram Of Test Setup ............................................ 16 7.2 Limit ................................................................. 17 7.3 Test procedure ........................................................ 18 7.4 EUT operating Conditions ............................................... 19 7.5 Test Result ........................................................... 20 8. RADIATED BAND EMISSION MEASUREMENT AND RESTRICTED BANDS OF OPERATION .................................................. 24 8.1 Block Diagram Of Test Setup ............................................ 24 8.2 Limit ................................................................. 24 8.3 Test procedure ........................................................ 25 8.4 EUT operating Conditions ............................................... 25 8.5 Test Result ........................................................... 26 9. CONDUCTED EMISSION ............................................. 27 9.1 Block Diagram Of Test Setup ............................................ 27 9.2 Limit ................................................................. 27 9.3 Test procedure ........................................................ 27 9.4 Test Result ........................................................... 28 10. 20 DB BANDWIDTH .................................................. 37 10.1 Block Diagram Of Test Setup .......................................... 37 Report No.: BCTC2106444813E No.：BCTC/RF-EMC-007 Page: 4 of 68 Edition：A.3 10.2 Limit ................................................................ 37 10.3 Test procedure ....................................................... 37 10.4 Test Result .......................................................... 38 11. MAXIMUM PEAK OUTPUT POWER .................................... 43 11.1 Block Diagram Of Test Setup .......................................... 43 11.2 Limit ................................................................ 43 11.3 Test procedure ....................................................... 43 11.4 Test Result .......................................................... 44 12. HOPPING CHANNEL SEPARATION ................................... 49 12.1 Block Diagram Of Test Setup .......................................... 49 12.2 Limit ................................................................ 49 12.3 Test procedure ....................................................... 49 12.4 Test Result .......................................................... 50 13. NUMBER OF HOPPING FREQUENCY .................................. 55 13.1 Block Diagram Of Test Setup .......................................... 55 13.2 Limit .....................................................…

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Report No.: BCTC2106444813E No.：BCTC/RF-EMC-007 Page: 66 of 68 Edition：A.3 17. EUT TEST SETUP PHOTOGRAPHS Conducted emissions Report No.: BCTC2106444813E No.：BCTC/RF-EMC-007 Page: 67 of 68 Edition：A.3 Radiated Measurement Photos