2ATQU-G122BoneBuds

Shenzhen Mengda Network Technology Co., Ltd Agent Authorization Company: Shenzhen Mengda Network Technology Co., Ltd Address: 403, Building 1, Yunchuang Cross-border, E-commerce Park, Bantian Street, Longgang District, Shenzhen, China Product Name: BoneBuds Model Number(s): G122 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: 2022/07/14 Name: DongWen Zhong Title: CEO Company: Shenzhen Mengda Network Technology Co., Ltd

Shenzhen Mengda Network Technology Co., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2022/07/14 Subject; Request for Confidentiality FCC ID: 2ATQU-G122 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 In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuantto KDB 726920 D01. 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: DongWen Zhong Title: CEO

External Photos

Size:20*10mm BoneBuds FCC ID: 2ATQU-G122 Label Location Label Location

Internal Photos Antenna Antenna

RF EXPOSURE EVALUATION METHOD FCC ID: 2ATQU-G122 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 Left Modulation Test Channel Output Power (dBm) Limit (dBm) GFSK Low 0.86 21 GFSK Middle 0.89 21 GFSK High 1 21 π/4DQPSK Low 0.97 21 π/4DQPSK Middle 0.94 21 π/4DQPSK High 1.04 21 8DPSK Low 1.09 21 8DPSK Middle 1.04 21 8DPSK High 1.19 21 Right Modulation Test Channel Output Power (dBm) Limit (dBm) GFSK Low 0.83 21 GFSK Middle 0.8 21 GFSK High 0.94 21 π/4DQPSK Low 0.82 21 π/4DQPSK Middle 0.8 21 π/4DQPSK High 0.91 21 8DPSK Low 0.93 21 8DPSK Middle 0.88 21 8DPSK High 1.01 21 max possible output power (PK,conducted)：1±1dBm 0.4dBi logarithmic terms convert to numeric result is nearly 1.10 2dBm=1.58mW 2402MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 1.58/5*√2.402=0.490≤3.0 2441MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 1.58/5*√2.441=0.494≤3.0 2480MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 1.58/5*√2.48=0.498≤3.0 Conclusion: 1. [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] * [√f(GHz)] < 3.0. 2. SAR Test Exclusion Thresholds is 3.0 for separation distance 5mm. Therefore, SAR test is not required.

No.：BCTC/RF-EMC-005 Page 1 of 129 Edition：A.4 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2206244015E Applicant: Shenzhen Mengda Network Technology Co., Ltd Product Name: BoneBuds Model/Type Ref.: G122 Tested Date: 2022-06-10 to 2022-06-22 Issued Date: 2022-06-22 Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 2 of 129 Edition：A.4 FCC ID: 2ATQU-G122 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: BoneBuds Trademark: DACOM Model/Type Ref.: G122 Prepared For: Shenzhen Mengda Network Technology Co., Ltd Address: 403, Building 1, Yunchuang Cross-border, E-commerce Park, Bantian Street, Longgang District, Shenzhen, China Manufacturer: Shenzhen Sande Dacom Electronics Co.,Ltd. Address: Building I, No.10. East of ShangXue Science&Technology Industrial Park. Bantian. LongGang. 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: 2022-06-10 Sample tested Date: 2022-06-10 to 2022-06-22 Issue Date: 2022-06-22 Report No.: BCTC2206244015E Test Standards: FCC Part15.247 ANSI C63.10-2013 Test Results: PASS Remark: This is Bluetooth Classic radio test report. Tested by: Approved by: Lei Chen/Project Handler Zero Zhou/Reviewer Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 3 of 129 Edition：A.4 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 4.4 Channel List .......................................................................................................... 9 4.5 Test Mode ............................................................................................................. 9 4.6 Table Of Parameters Of Text Software Setting ..................................................... 9 5. Test Facility And Test Instrument Used ............................................................... 10 5.1 Test Facility ......................................................................................................... 10 5.2 Test Instrument Used .......................................................................................... 10 6. Conducted Emissions .......................................................................................... 12 6.1 Block Diagram Of Test Setup .............................................................................. 12 6.2 Limit .................................................................................................................... 12 6.3 Test Procedure ................................................................................................... 12 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 .......................................................................................................... 19 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 ........................................................................................... 28 9.1 Block Diagram Of Test Setup .............................................................................. 28 9.2 Limit .................................................................................................................... 28 9.3 Test Procedure ................................................................................................... 28 9.4 Test Result .......................................................................................................... 28 10. 20 DB Bandwidth ........................................................…

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Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 67 of 129 Edition：A.4 Band Edge(Hopping) NVNT 2-DH1 2402MHz Hopping Ref Band Edge(Hopping) NVNT 2-DH1 2402MHz Hopping Emission Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 68 of 129 Edition：A.4 Band Edge(Hopping) NVNT 2-DH1 2480MHz Hopping Ref Band Edge(Hopping) NVNT 2-DH1 2480MHz Hopping Emission Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 69 of 129 Edition：A.4 Band Edge(Hopping) NVNT 3-DH1 2402MHz Hopping Ref Band Edge(Hopping) NVNT 3-DH1 2402MHz Hopping Emission Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 70 of 129 Edition：A.4 Band Edge(Hopping) NVNT 3-DH1 2480MHz Hopping Ref Band Edge(Hopping) NVNT 3-DH1 2480MHz Hopping Emission Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 71 of 129 Edition：A.4 10. 20 DB Bandwidth 10.1 Block Diagram Of Test Setup 10.2 Limit N/A 10.3 Test Procedure 1. Set RBW = 30kHz. 2. Set the video bandwidth (VBW) ≥ 3 x RBW. 3. Detector = Peak. 4. Trace mode = max hold. 5. Sweep = auto couple. 6. Allow the trace to stabilize. 7. Measure the maximum width of the emission that is constrained by the frequencies associated with the two outermost amplitude points (upper and lower frequencies) that are attenuated by 20 dB relative to the maximum level measured in the fundamental emission. . Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 72 of 129 Edition：A.4 10.4 Test Result Left Temperature： 26°C Relative Humidity： 54% Test Voltage ： DC 3.7V Remark N/A Modulation Test Channel Bandwidth(MHz) GFSK Low 0.944 GFSK Middle 0.96 GFSK High 0.952 π/4DQPSK Low 1.203 π/4DQPSK Middle 1.205 π/4DQPSK High 1.189 8DPSK Low 1.207 8DPSK Middle 1.207 8DPSK High 1.194 Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 73 of 129 Edition：A.4 Test Graphs -20dB Bandwidth NVNT 1-DH1 2402MHz -20dB Bandwidth NVNT 1-DH1 2441MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 74 of 129 Edition：A.4 -20dB Bandwidth NVNT 1-DH1 2480MHz -20dB Bandwidth NVNT 2-DH1 2402MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 75 of 129 Edition：A.4 -20dB Bandwidth NVNT 2-DH1 2441MHz -20dB Bandwidth NVNT 2-DH1 2480MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 76 of 129 Edition：A.4 -20dB Bandwidth NVNT 3-DH1 2402MHz -20dB Bandwidth NVNT 3-DH1 2441MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 77 of 129 Edition：A.4 -20dB Bandwidth NVNT 3-DH1 2480MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 78 of 129 Edition：A.4 Right Temperature： 26°C Relative Humidity： 54% Test Voltage ： DC 3.7V Remark N/A Modulation Test Channel Bandwidth(MHz) GFSK Low 0.932 GFSK Middle 0.953 GFSK High 0.964 π/4DQPSK Low 1.202 π/4DQPSK Middle 1.209 π/4DQPSK High 1.188 8DPSK Low 1.199 8DPSK Middle 1.206 8DPSK High 1.212 Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 79 of 129 Edition：A.4 Test Graphs -20dB Bandwidth NVNT 1-DH1 2402MHz -20dB Bandwidth NVNT 1-DH1 2441MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 80 of 129 Edition：A.4 -20dB Bandwidth NVNT 1-DH1 2480MHz -20dB Bandwidth NVNT 2-DH1 2402MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 81 of 129 Edition：A.4 -20dB Bandwidth NVNT 2-DH1 2441MHz -20dB Bandwidth NVNT 2-DH1 2480MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 82 of 129 Edition：A.4 -20dB Bandwidth NVNT 3-DH1 2402MHz -20dB Bandwidth NVNT 3-DH1 2441MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 83 of 129 Edition：A.4 -20dB Bandwidth NVNT 3-DH1 2480MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 84 of 129 Edition：A.4 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. Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 85 of 129 Edition：A.4 11.4 Test Result Left Temperature： 26°C Relative Humidity： 54% Test Voltage ： DC 3.7V Remark: N/A Modulation Test Channel Output Power (dBm) Limit (dBm) GFSK Low 0.86 21 GFSK Middle 0.89 21 GFSK High 1 21 π/4DQPSK Low 0.97 21 π/4DQPSK Middle 0.94 21 π/4DQPSK High 1.04 21 8DPSK Low 1.09 21 8DPSK Middle 1.04 21 8DPSK High 1.19 21 Right Temperature： 26°C Relative Humidity： 54% Test Voltage ： DC 3.7V Remark: N/A Modulation Test Channel Output Power (dBm) Limit (dBm) GFSK Low 0.83 21 GFSK Middle 0.8 21 GFSK High 0.94 21 π/4DQPSK Low 0.82 21 π/4DQPSK Middle 0.8 21 π/4DQPSK High 0.91 21 8DPSK Low 0.93 21 8DPSK Middle 0.88 21 8DPSK High 1.01 21 Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 86 of 129 Edition：A.4 Left Test Graphs Power NVNT 1-DH1 2402MHz Power NVNT 1-DH1 2441MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 87 of 129 Edition：A.4 Power NVNT 1-DH1 2480MHz Power NVNT 2-DH1 2402MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 88 of 129 Edition：A.4 Power NVNT 2-DH1 2441MHz Power NVNT 2-DH1 2480MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 89 of 129 Edition：A.4 Power NVNT 3-DH1 2402MHz Power NVNT 3-DH1 2441MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 90 of 129 Edition：A.4 Power NVNT 3-DH1 2480MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 91 of 129 Edition：A.4 Right Test Graphs Power NVNT 1-DH1 2402MHz Power NVNT 1-DH1 2441MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 92 of 129 Edition：A.4 Power NVNT 1-DH1 2480MHz Power NVNT 2-DH1 2402MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 93 of 129 Edition：A.4 Power NVNT 2-DH1 2441MHz Power NVNT 2-DH1 2480MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 94 of 129 Edition：A.4 Power NVNT 3-DH1 2402MHz Power NVNT 3-DH1 2441MHz Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 95 of 129 Edition：…

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Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 127 of 129 Edition：A.4 17. EUT Test Setup Photographs Conducted Measurement Photo Radiated Measurement Photos Report No.: BCTC2206244015E No.：BCTC/RF-EMC-005 Page 128 of 129 Edition：A.4 Left Right