2ADK3XO-9939BLUETOOTH FITNESS TRACKER

CONFIDENTIALITY REQUEST for Certification Service in USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21046 <2020-05-21> TO WHOM IT MAY CONCERN Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we requests confidentiality for the following products: FCC ID Model name 2ADK3XO-9939 XO-9939 For the product stated above, we request that the following information be held confidential; Exhibits Long-Term Confidentiality Short-Term Confidentiality Short-Term Confidentiality Days External Photos Internal Photos Block Diagram Schematics Test Setup Photos User’s Manual Parts List Tune Up Operational Descriptions The long-term confidentiality exhibits contain our trade secrets and proprietary information that could be of benefit to our competitors. The short-term confidentiality on the basis of ensuring that business sensitive information remains confidential until the actual marketing of our new device. If you have any questions, please feel free to contact me at the address shown below. Sincerely, Client’s name / title : Sam Shen / Sales Company: XING DA INTERNATIONAL ELECTRONICS LIMITED Address: #98 LiWu Swan Industrial District, Qiao Tou Town, Dong Guan City, Guang Dong, China Phone: 0769-83454636 Fax: 0769-83345348 E-mail: [email protected]

XING DA INTERNATIONAL ELECTRONICS LIMITED Add: #98 LiWu Swan Industrial District, Qiao Tou Town, Dong Guan City, Guang Dong, China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2020/05/21 To whom it may concern: We, XING DA INTERNATIONAL ELECTRONICS LIMITED the undersigned, hereby authorize Eurofins Product Service GmbH to act on our behalf in all matters relating to applications for equipment authorization FCC ID: 2ADK3XO-9939 including the signing of all documents related to these matters. Any and all acts carried out by Eurofins Product Service GmbH on our behalf shall have the same effect as acts of our own. We also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Sincerely, Name: Sam Shen / Sales Company: XING DA INTERNATIONAL ELECTRONICS LIMITED Address: #98 LiWu Swan Industrial District, Qiao Tou Town, Dong Guan City, Guang Dong, China Phone: 0769-83454636 Fax: 0769-83345348 E-Mail: [email protected]

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 4 1. EXTERNAL PHOTOGRAPHS OF THE EUT Fig. 1 Fig. 2 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 2 of 4 Fig. 3 Fig. 4 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 3 of 4 Fig. 5 Fig. 6 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 4 of 4 Fig. 7

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 1 Label and Location Size: L0.5mm*W0.5mm FCC ID: 2ADK3XO-9939 Location

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 2 Internal Photos of the EUT Fig.1 Fig.2 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 2 of 2 Fig.3 Fig.4 Bluetooth Antenna

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 2 FCC RF Exposure Evaluation 1. Product Information FCC ID: 2ADK3XO-9939 Product name BLUETOOTH FITNESS TRACKER Model number XO-9939 Power supply DC 3.7V By Battery(90mAh) Recharged By DC 5V 65mA Modulation Type GFSK for Bluetooth V4.0 (BT LE) Antenna Type Internal Antenna Antenna Gain 0 dBi (maximum) Hardware version V1.0 Software version V1.0 Bluetooth Operation frequency 2402MHz-2480MHz Exposure category General population/uncontrolled environment EUT Type Production Unit Device Type Portable Device 2. Evaluation Method According to KDB447498 D01 General RF Exposure Guidance v06 Section 4.3.1 Standalone SAR test exclusion considerations: “Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition, listed below, is satisfied. These test exclusion conditions are based on source-based time-averaged maximum conducted output power of the RF channel requiring evaluation, adjusted for tune-up tolerance, and the minimum test separation distance required for the exposure conditions.22 The minimum test separation distance is determined by the smallest distance from the antenna and radiating structures or outer surface of the device, according to the host form factor, exposure conditions and platform requirements, to any part of the body or extremity of a user or bystander (see 5) of section 4.1). To qualify for SAR test exclusion, the test separation distances applied must be fully explained and justified by the operating configurations and exposure conditions of the transmitter and applicable host platform requirements, typically in the SAR measurement or SAR analysis report, according to the required published RF exposure KDB procedures. When no other RF exposure testing or reporting is required, a statement of justification and compliance must be included in the equipment approval, in lieu of the SAR report, to qualify for the SAR test exclusion. When required, the device specific conditions described in the other published RF exposure KDB procedures must be satisfied before applying these SAR test exclusion provisions; for example, handheld PTT two-way radios, handsets, laptops & tablets etc.“ [(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 • 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below 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 according to 5) in section 4.1 is applied to determine SAR test exclusion. When one of the following test exclusion conditions is satisfied for all combinations of simultaneous transmission configurations, further equipment approval is not required to incorporate transmitter modules in host devices that operate in the mixed mobile and portable host platform exposure conditions. The grantee is responsible for documenting this according to Class I permissive change requirements. Antennas that qualify for standalone SAR test exclusion must apply the estimated SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 2 of 2 standalone SAR to determine simultaneous transmission test exclusion. a) The [∑ of (the highest measured or estimated SAR for each standalone antenna configuration, adjusted for maximum tune-up tolerance) / 1.6 W/kg] + [∑ of MPE ratios] is ≤ 1.0. b) The SAR to peak location separation ratios of all simultaneously transmitting antenna pairs operating in portable device exposure conditions are all ≤ 0.04, and the [∑ of MPE ratios] is ≤ 1.0. 3. Refer Evaluation Method ANSI C95.1–1999: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz. FCC KDB publication 447498 D01 General RF Exposure Guidance v06: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies. FCC CFR 47 part1 1.1310: Radiofrequency radiation exposure limits. FCC CFR 47 part2 2.1093: Radiofrequency radiation exposure evaluation: portable devices 4. Conducted Power Results Mode Channel Frequency(MHz) Peak Conducted Output Power (dBm) GFSK 0 2402 3.860 19 2440 3.475 39 2480 3.331 5. Manufacturing Tolerance GFSK –BT LE (Peak) Channel Channel 0 Channel 19 Channel 39 Target (dBm) 3.0 3.0 3.0 Tolerance ±(dB) 1.0 1.0 1.0 6. Evaluation Results 6.1 Standalone Evaluation Band/Mode f (GHz) Antenna Distance (mm) RF output power SAR Test Exclusion Threshold SAR Test Exclusion dBm mW GFSK 2.450 5 4.0 2.5119 0.8 < 3.0 Yes Remark: (1). RF output power including tune up tolerance; (2). When the minimum test separation distance is < 5 mm, a distance of 5 mm according to f) in section 4.1 of KDB 447498 is applied to determine SAR test exclusion. 6.2 Simultaneous Transmission for SAR Exclusion The sample support one BT modular and one antenna, no need consider simultaneous transmission; 7. Conclusion The measurement results comply with the FCC Limit per 47 CFR 2.1093 for the uncontrolled RF Exposure and SAR Exclusion Threshold per KDB 447498 v06. ----------------THE END OF REPORT---------------

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 34 FCC TEST REPORT For XING DA INTERNATIONAL ELECTRONICS LIMITED BLUETOOTH FITNESS TRACKER Test Model: XO-9939 Prepared for : XING DA INTERNATIONAL ELECTRONICS LIMITED Address : #98 LiWu Swan Industrial District, Qiao Tou Town, Dong Guan City, Guang Dong, China Prepared by : Shenzhen LCS Compliance Testing Laboratory Ltd. Address : 101, 201 Bldg A & 301 Bldg C, Juji Industrial Park Shajing Street, Bao’an District, Shenzhen, Guangdong, China Tel : (+86)755-82591330 Fax : (+86)755-82591332 Web : www.LCS-cert.com Mail : [email protected] Date of receipt of test sample : April 30, 2020 Number of tested samples : 2 Sample No. : LCS200429045A-1, LCS200429045A-2 Serial number : Prototype Date of Test : April 30, 2020 ~ May 21, 2020 Date of Report : May 21, 2020 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 2 of 34 FCC TEST REPORT FCC CFR 47 PART 15 C(15.247) Report Reference No. ................. : LCS200429045AEA Date of Issue ................................... : May 21, 2020 Testing Laboratory Name ............. : Shenzhen LCS Compliance Testing Laboratory Ltd. Address ........................................... : 101, 201 Bldg A & 301 Bldg C, Juji Industrial Park Shajing Street, Bao’an District, Shenzhen, Guangdong, China Testing Location/ Procedure ........... : Full application of Harmonised standards ■ Partial application of Harmonised standards □ Other standard testing method □ Applicant’s Name .......................... : XING DA INTERNATIONAL ELECTRONICS LIMITED Address ........................................... : #98 LiWu Swan Industrial District, Qiao Tou Town, Dong Guan City, Guang Dong, China Test Specification Standard .......................................... : FCC CFR 47 PART 15 C(15.247) Test Report Form No. ................... : LCSEMC-1.0 TRF Originator ................................ : Shenzhen LCS Compliance Testing Laboratory Ltd. Master TRF ..................................... : Dated 2019-03 Shenzhen LCS Compliance Testing Laboratory Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen LCS Compliance Testing Laboratory Ltd. is acknowledged as copyright owner and source of the material. Shenzhen LCS Compliance Testing Laboratory Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. EUT Description. ........................... : BLUETOOTH FITNESS TRACKER Trade Mark ...................................... : N/A Model/ Type reference .................... : XO-9939 Ratings ............................................ : DC 3.7V By Battery(90mAh) Recharged By DC 5V 65mA Result ............................................ : Positive Compiled by: Supervised by: Approved by: Scent Hu/ Administrators Jin Wang/ Technique principal Gavin Liang/ Manager SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 3 of 34 FCC -- TEST REPORT Type / Model........................... : XO-9939 EUT......................................... : BLUETOOTH FITNESS TRACKER Applicant............................... : XING DA INTERNATIONAL ELECTRONICS LIMITED Address.................................. : #98 LiWu Swan Industrial District, Qiao Tou Town, Dong Guan City, Guang Dong, China Telephone............................... : / Fax.......................................... : / Manufacturer........................ : XING DA INTERNATIONAL ELECTRONICS LIMITED Address................................... : #98 LiWu Swan Industrial District, Qiao Tou Town, Dong Guan City, Guang Dong, China Telephone............................... : / Fax.......................................... : / Factory................................... : XING DA INTERNATIONAL ELECTRONICS LIMITED Address................................... : #98 LiWu Swan Industrial District, Qiao Tou Town, Dong Guan City, Guang Dong, China Telephone............................... : / Fax.......................................... : / Test Result Positive The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Test Report No. : LCS200429045AEA May 21, 2020 Date of issue SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 4 of 34 Revision History Revision Issue Date Revisions Revised By 000 May 21, 2020 Initial Issue Gavin Liang SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 5 of 34 TABLE OF CONTENTS 1. GENERAL INFORMATION .................................................................................................................................... 6 1.1. DESCRIPTION OF DEVICE (EUT) ........................................................................................................................ 6 1.2. SUPPORT EQUIPMENT LIST ................................................................................................................................. 6 1.3. EXTERNAL I/O C…

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SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA Page 1 of 16 Appendix A RF Test Data for BT 4.0(BLE) (Conducted Measurement) Product Name: BLUETOOTH FITNESS TRACKER Trade Mark: N/A Test Model: XO-9939 Environmental Conditions Temperature: 23.4  C Relative Humidity: 54% ATM Pressure: 100.0 kPa Test Engineer: Jerry Zeng Supervised by: Tom Liu A.1 Duty Cycle Test Mode Test Channel Ant Duty Cycle[%] Verdict BT LE 2440 Ant1 100 PASS #im grbble1hchnnav SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA Page 2 of 16 A.2 Maximum Conducted Peak Output Power Mode Channel Conduct Peak Power[dBm] Limit [dBm] Verdict BT LE LCH 3.860 30 PASS BT LE MCH 3.475 30 PASS BT LE HCH 3.331 30 PASS Test Graphs LCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA Page 3 of 16 MCH HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA Page 4 of 16 A.3 Maximum Power Spectral Density Mode Channel PSD [dBm/3KHz] Limit [dBm/3KHz] Verdict BT LE LCH -12.643 8 PASS BT LE MCH -12.935 8 PASS BT LE HCH -11.992 8 PASS Test Graphs LCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA Page 5 of 16 MCH HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA Page 6 of 16 A.4 6dB Bandwidth and Occupied Bandwidth Mode Channel Occupied Bandwidth [MHz] 6dB Bandwidth [MHz] Limit [MHz] Verdict BT LE LCH 1.0642 0.7388 ≥0.5 PASS BT LE MCH 1.0628 0.7421 ≥0.5 PASS BT LE HCH 1.0575 0.7406 ≥0.5 PASS Test Graphs LCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA Page 7 of 16 MCH HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA Page 8 of 16 A.6 RF Conducted Spurious Emissions Mode Channel Pref [dBm] Max. Level [dBm] Limit [dBm] Verdict BT LE LCH 2.862 -31.127 -17.14 PASS BT LE MCH 2.538 -31.053 -17.46 PASS BT LE HCH 2.347 -34.127 -17.65 PASS SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA Page 9 of 16 BT LE_LCH_Graphs Pref/BT LE/LCH Puw/BT LE/LCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA Page 10 of 16 BT LE_MCH_Graphs Pref/BT LE/MCH Puw/BT LE/MCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA Page 11 of 16 BT LE_HCH_Graphs Pref/BT LE/HCH Puw/BT LE/HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA Page 12 of 16 A.7 Band-edge for RF Conducted Emissions Mode Channel Carrier Power[dBm] Max.Spurious Level [dBm] Limit [dBm] Verdict BT LE LCH 3.076 -50.709 -16.92 PASS BT LE HCH 2.633 -56.190 -17.37 PASS Test Graphs LCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA Page 13 of 16 HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA Page 14 of 16 A.8 Restrict-band band-edge measurements Test Mode Test Chann el Ant Freq. Power [dBm] Gain Ground Factor E [dBuV/m] Detector Limit [dBuV/ m] Verdi ct BT LE 2402 Ant1 2310.0 -52.102 2.0 0 45.13 PEAK 74 PASS Ant1 2310.0 -62.682 2.0 0 34.55 AV 54 PASS Ant1 2390.0 -51.059 2.0 0 46.17 PEAK 74 PASS Ant1 2390.0 -61.922 2.0 0 35.31 AV 54 PASS 2480 Ant1 2483.5 -48.665 2.0 0 48.57 PEAK 74 PASS Ant1 2483.5 -59.529 2.0 0 37.70 AV 54 PASS Ant1 2500.0 -50.537 2.0 0 46.69 PEAK 74 PASS Ant1 2500.0 -61.716 2.0 0 35.51 AV 54 PASS SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA Page 15 of 16 Restrict-band band-edge measurements_BT LE_2402_Ant1_PEAK Restrict-band band-edge measurements_BT LE_2402_Ant1_AV SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 Report No.: LCS200429045AEA Page 16 of 16 Restrict-band band-edge measurements_BT LE_2480_Ant1_PEAK Restrict-band band-edge measurements_BT LE_2480_Ant1_AV

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 _______________________________________________________________________________________________ This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 2 Test Setup Photos of the EUT Test Setup Photo(s) of Radiated Emissions Measurement Fig.1 (Below 1GHz) Fig.2 (Above 1GHz) SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ADK3XO-9939 _______________________________________________________________________________________________ This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 2 of 2 Test Setup Photo of Line Conducted Emissions Measurement Fig.3