2AWJ2TWS07-BTWS07-B TWS Bluetooth headphones

The product name, trademark, model, MIC ID and logo can be seen on the label at the bottom of the charging box. 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 interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits aredesigned to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: - Reorient or relocate the receiving antenna. - Increase the separation between the equipment and receiver -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

Shenzhen Kangchen Electronic Co., Ltd. 8 / F, building B, Ruixiangfa Industrial Park, No. 3, Shangxue Science Park, Bantian, Longgang District, 518116, Shenzhen, China Agent Authorization Company: Shenzhen Kangchen Electronic Co., Ltd. Address: 8 / F, building B, Ruixiangfa Industrial Park, No. 3, Shangxue Science Park, Bantian, Longgang District, 518116, Shenzhen, China Product Name: TWS07-B TWS Bluetooth headphones Model Number(s): TWS07-B, T7, T8, TWS08, TWS09 Product Description: TWS07-B TWS Bluetooth headphones We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: Jun. 01, 2020 Name: Zherong Zhao Title: General Manager Company: Shenzhen Kangchen Electronic Co., Ltd.

Shenzhen Kangchen Electronic Co., Ltd. 8 / F, building B, Ruixiangfa Industrial Park, No. 3, Shangxue Science Park, Bantian, Longgang District, 518116, Shenzhen, China Jun. 01, 2020 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject: Explanation of differences between product types FCC ID: 2AWJ2TWS07-B Models: TWS07-B, T7, T8, TWS08, TWS09 To Whom It May Concern: We, The Shenzhen Kangchen Electronic Co., Ltd. hereby declare that the model : T7, T8, TWS08, TWS09 is identical with the model : TWS07-B, except the model name. Except for the different above, no other modification is performed. Sincerely, Shenzhen Kangchen Electronic Co., Ltd. Signature: [Zherong Zhao, General Manager]

Shenzhen Kangchen Electronic Co., Ltd. 8 / F, building B, Ruixiangfa Industrial Park, No. 3, Shangxue Science Park, Bantian, Longgang District, 518116, Shenzhen, China Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Jun. 01, 2020 Subject; Request for Confidentiality FCC ID: 2AWJ2TWS07-B To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description Parts List Tune-up Procedure It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Zherong Zhao Title: General Manager

External Photos WHOLE VIEW OF EUT TOP VIEW OF EUT BOTTOM VIEW OF EUT FRONT VIEW OF EUT BACK VIEW OF EUT LEFT VIEW OF EUT RIGHT VIEW OF EUT

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 interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. FCC ID: 2AWJ2TWS07-B

Internal Photos OPEN VIEW OF EUT VIEW OF BATTERY-1 VIEW OF BATTERY-2 INTERNAL VIEW OF EUT-1 BT Antenna BT Antenna INTERNAL VIEW OF EUT-2 INTERNAL VIEW OF EUT-3 INTERNAL VIEW OF EUT-4

RF EXPOSURE EVALUATION 1. PRODUCT INFORMATION Product Description TWS07-B TWS Bluetooth headphones Model Name TWS07-B FCC ID 2AWJ2TWS07-B 2. EVALUATION METHOD According to 447498 D01 General RF Exposure Guidance v05 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 3. CALCULATION BR/EDR: P t =2.521dBm=1.79mW The value of the Maximum output power P t is referred to the test report of the CFR47 §15.247. The result for RF exposure evaluation SAR=(1.79mW /5mm) .[√2.480GHz)]=0.56<3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR. 4. CONCLUSION The SAR evaluation is not required.

Page 1 of 66 FCC Test Report Report No.: AGC04068200501FE03 FCC ID : 2AWJ2TWS07-B APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : TWS07-B TWS Bluetooth headphones BRAND NAME : N/A MODEL NAME : TWS07-B, T7, T8, TWS08, TWS09 APPLICANT : Shenzhen Kangchen Electronic Co., Ltd DATE OF ISSUE : Jun. 01, 2020 STANDARD(S) : FCC Part 15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd CAUTION: This report shall not be reproduced except in full without the written permission of the test laboratory and shall not be quoted out of context. Report No.: AGC04068200501FE03 Page 2 of 66 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0 / Jun. 01, 2020 Valid Initial Release Report No.: AGC04068200501FE03 Page 3 of 66 TABLE OF CONTENTS 1. VERIFICATION OF CONFORMITY .................................................................................................................. 5 2. GENERAL INFORMATION .............................................................................................................................. 6 2.1. PRODUCT DESCRIPTION ........................................................................................................................ 6 2.2. TABLE OF CARRIER FREQUENCYS ....................................................................................................... 6 2.3. RECEIVER INPUT BANDWIDTH .............................................................................................................. 7 2.4. EXAMPLE OF A HOPPING SEQUENCY IN DATA MODE ......................................................................... 7 2.5. EQUALLY AVERAGE USE OF FREQUENCIES AND BEHAVIOUR ......................................................... 7 2.6. RELATED SUBMITTAL(S) / GRANT (S) .................................................................................................... 8 2.7. TEST METHODOLOGY ............................................................................................................................. 8 2.8. SPECIAL ACCESSORIES ......................................................................................................................... 8 2.9. EQUIPMENT MODIFICATIONS ................................................................................................................. 8 3. MEASUREMENT UNCERTAINTY ................................................................................................................... 9 4. DESCRIPTION OF TEST MODES ................................................................................................................. 10 5. SYSTEM TEST CONFIGURATION ................................................................................................................. 11 5.1. CONFIGURATION OF EUT SYSTEM ....................................................................................................... 11 5.2. EQUIPMENT USED IN TESTED SYSTEM ............................................................................................... 11 5.3. SUMMARY OF TEST RESULTS ............................................................................................................... 11 6. TEST FACILITY .............................................................................................................................................. 12 7. PEAK OUTPUT POWER ................................................................................................................................ 13 7.1. MEASUREMENT PROCEDURE ............................................................................................................. 13 7.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 13 7.3. LIMITS AND MEASUREMENT RESULT .................................................................................................. 14 8. 20DB BANDWIDTH ........................................................................................................................................ 18 8.1. MEASUREMENT PROCEDURE ............................................................................................................. 20 8.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 20 8.3. LIMITS AND MEASUREMENT RESULTS ............................................................................................... 20 9. CONDUCTED SPURIOUS EMISSION........................................................................................................... 25 9.1. MEASUREMENT PROCEDURE ............................................................................................................. 27 9.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 27 9.3. MEASUREMENT EQUIPMENT USED .................................................................................................... 27 9.4. LIMITS AND MEASUREMENT RESULT .................................................................................................. 27 Report No.: AGC04068200501FE03 Page 4 of 66 10. RADIATED EMISSION ................................................................................................................................. 35 10.1. MEASUREMENT PROCEDURE ........................................................................................................... 37 10.2. TEST SETUP ......................................................................................................................................... 39 10.3. LIMITS AND MEASUREMENT RESULT ............................................................................................... 40 10.4. TEST RESULT........................................................................................................................................ 40 11. NUMBER OF HOPPING FREQUENCY ...................…

Text truncated - open the document above for the full version.

Report No.: AGC04068200501FE03 Page 41 of 66 RADIATED EMISSION BELOW 1GHZ EUT TWS07-B TWS Bluetooth headphones Model Name TWS07-B Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 7 Antenna Horizontal RESULT: PASS Report No.: AGC04068200501FE03 Page 42 of 66 EUT TWS07-B TWS Bluetooth headphones Model Name TWS07-B Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 7 Antenna Vertical RESULT: PASS Note: 1. Factor=Antenna Factor + Cable loss, Margin=Measurement-Limit. 2. All test modes had been pre-tested. The mode 7 is the worst case and recorded in the report. Report No.: AGC04068200501FE03 Page 43 of 66 RADIATED EMISSION ABOVE 1GHZ EUT TWS07-B TWS Bluetooth headphones Model Name TWS07-B Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 7 Antenna Horizontal FrequencyMeter ReadingFactorEmission LevelLimitsMargin (MHz)(dBμV)(dB)(dBμV/m)(dBμV/m)(dB) 4804.00055.890.0855.9774-18.03 peak 4804.00044.360.0844.4454-9.56 AVG 7206.00055.112.2157.3274-16.68 peak 7206.00043.782.2145.9954-8.01 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier. Value Type EUT TWS07-B TWS Bluetooth headphones Model Name TWS07-B Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 7 Antenna Vertical FrequencyMeter ReadingFactorEmission LevelLimitsMargin (MHz)(dBμV)(dB)(dBμV/m)(dBμV/m)(dB) 4804.00054.750.0854.8374-19.17 peak 4804.00043.590.0843.6754-10.33 AVG 7206.00053.882.2156.0974-17.91 peak 7206.00042.962.2145.1754-8.83 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier. Value Type Report No.: AGC04068200501FE03 Page 44 of 66 EUT TWS07-B TWS Bluetooth headphones Model Name TWS07-B Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 8 Antenna Horizontal FrequencyMeter ReadingFactorEmission LevelLimitsMargin (MHz)(dBμV)(dB)(dBμV/m)(dBμV/m)(dB) 4882.00053.720.1453.8674-20.14 peak 4882.00042.110.1442.2554-11.75 AVG 7323.00052.822.3655.1874-18.82 peak 7323.00041.682.3644.0454-9.96 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier. Value Type EUT TWS07-B TWS Bluetooth headphones Model Name TWS07-B Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 8 Antenna Vertical FrequencyMeter ReadingFactorEmission LevelLimitsMargin (MHz)(dBμV)(dB)(dBμV/m)(dBμV/m)(dB) 4882.00052.580.1452.7274-21.28 peak 4882.00041.330.1441.4754-12.53 AVG 7323.00051.932.3654.2974-19.71 peak 7323.00040.612.3642.9754-11.03 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier. Value Type Report No.: AGC04068200501FE03 Page 45 of 66 EUT TWS07-B TWS Bluetooth headphones Model Name TWS07-B Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 9 Antenna Horizontal FrequencyMeter ReadingFactorEmission LevelLimitsMargin (MHz)(dBμV)(dB)(dBμV/m)(dBμV/m)(dB) 4960.00051.850.2252.0774-21.93 peak 4960.00041.260.2241.4854-12.52 AVG 7440.00051.222.6453.8674-20.14 peak 7440.00040.542.6443.1854-10.82 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier. Value Type EUT TWS07-B TWS Bluetooth headphones Model Name TWS07-B Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 9 Antenna Vertical FrequencyMeter ReadingFactorEmission LevelLimitsMargin (MHz)(dBμV)(dB)(dBμV/m)(dBμV/m)(dB) 4960.00050.790.2251.0174-22.99 peak 4960.00040.850.2241.0754-12.93 AVG 7440.00050.342.6452.9874-21.02 peak 7440.00039.482.6442.1254-11.88 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier. Value Type RESULT: PASS Note: Other emissions from 1G to 25 GHz are considered as ambient noise. No recording in the test report. Factor = Antenna Factor + Cable loss - Amplifier gain, Over=Measure-Limit. The “Factor” value can be calculated automatically by software of measurement system. All test modes had been tested. The 8DPSK modulation is the worst case and recorded in the report. Report No.: AGC04068200501FE03 Page 46 of 66 TEST RESULT FOR RESTRICTED BANDS REQUIREMENTS EUT TWS07-B TWS Bluetooth headphones Model Name TWS07-B Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 7 Antenna Horizontal PK AV RESULT: PASS Report No.: AGC04068200501FE03 Page 47 of 66 EUT TWS07-B TWS Bluetooth headphones Model Name TWS07-B Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 7 Antenna Vertical PK AV RESULT: PASS Report No.: AGC04068200501FE03 Page 48 of 66 EUT TWS07-B TWS Bluetooth headphones Model Name TWS07-B Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 9 Antenna Horizontal PK AV RESULT: PASS Report No.: AGC04068200501FE03 Page 49 of 66 EUT TWS07-B TWS Bluetooth headphones Model Name TWS07-B Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 9 Antenna Vertical PK AV RESULT: PASS Note: The factor had been edited in the “Input Correction” of the Spectrum Analyzer. So the Amplitude of test plots is equal to Reading level plus the Factor in dB. Use the A dB(μV) to represent the Amplitude. Use the F dB(μV/m) to represent the Field Strength. So A=F. All test modes had been pre-tested. The 8DPSK modulation is the worst case and recorded in the report. Report No.: AGC04068200501FE03 Page 50 of 66 11. NUMBER OF HOPPING FREQUENCY 11.1. MEASUREMENT PROCEDURE The EUT shall have its hopping function enabled. Use the following spectrum analyzer settings: 1. Span: The frequency band of operation. Depending on the number of channels the device supports, it may be necessary to divide the frequency range of operation across multiple spans, to allow the individual channels to be clearly seen. 2. RBW: To identify clearly the individual channels, set the RBW to less than 30% of the…

Text truncated - open the document above for the full version.

Test Setup Photos RADIATED EMISSION TEST SETUP BELOW 1GHZ RADIATED EMISSION TEST SETUP ABOVE 1GHZ CONDUCTED TEST SETUP