2AE57-CK121Wireless neckband earbuds

FCC ID: 2AE57-CK121

FCC ID: 2AE57-CK121

Label Location On EUT Label Product Name: Wireless neckband earbuds Model No.: CK-121 FCC ID: 2AE57-CK121

FCC ID: 2AE57-CK121

version01 CHANCO ELECTRONICS FACTORY Declaration concerning Antenna Specification It is hereby declared that the product Model No.: Wireless neckband earbuds FCCID:2AE57-CK121 fulfills the requirement in FCC test relating to the antenna type. The device specified above confirms to the FCC recommendations for internal antenna type(s) described below: BDR: Model No. of antenna: N/A Type of antenna:PCB Antenna Gain of the antenna: 1.2 dBi Frequency range:2402MHz~2480MHz The mounting of the antenna is fixed to the radio module and no other antenna should be used. Company name: CHANCO ELECTRONICS FACTORY Address: No.27, Sha Jin South Street, Changan Town, Dongguan City, Guangdong Province, China City:Dongguan City ZIP / Postal code: N/A Country:China Place:ChinaDate: 2020-03-27 Signature:

RF EXPOSURE EVALUATION FCC ID: 2AE57-CK121 According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency(RF) Radiation as specified in §1.1307(b): Routine SAR evaluation refers to that specifically required by §2.1093, using measurements or computer simulation. When routine SAR evaluation is not required, portable transmitters withoutput power greater than the applicable low threshold require SAR evaluation to qualify for TCB approval. Channel (MHz) Maximum output power (dBm) Tune up tolerance (dBm) Max Tune Up Power (dBm) Distance (mm) Calculation results Limit Operating Mode 2402-2.341 -2.341±1-1.34150.228 3 BDR 2441-0.574 -0.574±10.42650.345 3 24800.8110.811±11.81150.478 3 2402-3.404 -3.404±1-2.40450.178 3 EDR 2441-1.842 -1.842±1-0.84250.257 3 2480-0.533 -0.533±10.46750.351 3 Test Results:PASS.

Report No.: 18220WC00016101FCC ID: 2AE57-CK121Page 1 of 57 Code:AB-RF-05-a FCC TEST REPORT Client Name: CHANCO ELECTRONICS FACTORY Address: No.27, Sha Jin South Street, Changan Town, Dongguan City, Guangdong Province, China Product Name: Wireless neckband earbuds Date: Mar. 24, 2020 Shenzhen Anbotek Compliance Laboratory Limited Report No.: 18220WC00016101FCC ID: 2AE57-CK121Page 2 of 57 Code:AB-RF-05-a Contents 1. General Information ............................................................................................................................................... 5 1.1. Client Information ....................................................................................................................................... 5 1.2. Description of Device (EUT) ..................................................................................................................... 5 1.3. Auxiliary Equipment Used During Test ................................................................................................... 6 1.4. Description of Test Modes ........................................................................................................................ 6 1.5. List of channels ........................................................................................................................................... 7 1.6. Description Of Test Setup ......................................................................................................................... 8 1.7. Test Equipment List .................................................................................................................................... 9 1.8. Measurement Uncertainty ....................................................................................................................... 10 1.9. Description of Test Facility ...................................................................................................................... 10 2. Summary of Test Results ................................................................................................................................... 11 3. Conducted Emission Test ................................................................................................................................... 12 3.1. Test Standard and Limit .......................................................................................................................... 12 3.2. Test Setup .................................................................................................................................................. 12 3.3. Test Procedure .......................................................................................................................................... 12 3.4. Test Data .................................................................................................................................................... 12 4. Radiation Spurious Emission and Band Edge ................................................................................................ 15 4.1. Test Standard and Limit .......................................................................................................................... 15 4.2. Test Setup .................................................................................................................................................. 15 4.3. Test Procedure .......................................................................................................................................... 16 4.4. Test Data .................................................................................................................................................... 17 5. Maximum Peak Output Power Test .................................................................................................................. 25 5.1. Test Standard and Limit .......................................................................................................................... 25 5.2. Test Setup .................................................................................................................................................. 25 5.3. Test Procedure .......................................................................................................................................... 25 5.4. Test Data .................................................................................................................................................... 25 6. 20DB Occupy Bandwidth Test ........................................................................................................................... 29 6.1. Test Standard ............................................................................................................................................ 29 6.2. Test Setup .................................................................................................................................................. 29 6.3. Test Procedure .......................................................................................................................................... 29 6.4. Test Data .................................................................................................................................................... 29 7. Carrier Frequency Separation Test ................................................................................................................... 33 7.1. Test Standard and Limit .......................................................................................................................... 33 7.2. Test Setup .................................................................................................................................................. 33 7.3. Test Procedure .....................................................................................................................................…

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FCC ID: 2AE57-CK121 Photo of Conducted Emission Measurement Photo of Radiation Emission Test