2AWXK-ABKOEC10Wireless Stereo Earbuds

The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

<ABKO CO.,LTD> Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2020-8-11 Subject; Request for Confidentiality FCC ID: 2AWXK-ABKOEC10 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 Parts List Operational Description Tune-up Procedure 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); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to 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: Lim Title: manager

ABKO CO.,LTD Letter of Authorization Company: ABKO CO.,LTD Address: M Signature 7th floor, 20, Magokjungang 1-ro, Gangseo-gu, Seoul, South Korea Product Name: Wireless Stereo Earbuds Model Number: EC10 FCC Identifier: 2AWXK-ABKOEC10 We authorize MiCOM Labs Inc, 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the above named equipment. Any individual within MiCOM Labs is authorized to act on our behalf and take action on the application. We declare that MiCOM Labs Inc, 575 Boulder Court, Pleasanton, California 94566, USA, is allowed to forward all information related to the approval project to the Federal Communication Commission 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. Name: Lim Date: 2020-8-11 Title: manager Signature of applicant:

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 1. EXTERIOR PHOTOGRAPHS Fig. 1 Fig. 2 Auxiliary Equipment The left and right sides are the same SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Fig. 3 Fig. 4 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Fig. 5 Fig. 6 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Fig. 7

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 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: L3.0cm*W2.0cm Label Location FCC ID: 2AWXK-ABKOEC10

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 1. INTERIOR PHOTOGRAPHS Fig. 1 Fig. 2 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Fig. 3 Fig. 4 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Fig. 5 Fig. 6 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Fig. 7 Fig. 8 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Fig. 9 Fig. 10 BT Antenna

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 3 FCC RF Exposure Evaluation 1. Product Information FCC ID: 2AWXK-ABKOEC10 Product name Wireless Stereo Earbuds Model number EC10 Model List No. EC10 Power supply Earbuds: DC 3.7V by Battery(55mAh) Recharged by DC 5V 50mA Box: DC 3.7V By Battery(500mAh) Recharged By DC 5V 1000mA Modulation Type GFSK, π/4-DQPSK, 8-DPSK for V5.0 (BT Classics) GFSK for Bluetooth V5.0 (BT LE) Channel Number 79 channels for Bluetooth V5.0 (BT Classics) 40 channels for Bluetooth V5.0 (BT LE) Channel Spacing 1MHz for Bluetooth V5.0 (BT Classics) 2MHz for Bluetooth V5.0 (BT LE) Antenna Type Internal Antenna Antenna Gain 0.42dBi (maximum) Hardware version V1.3 Software version V1.9 Bluetooth Operation frequency 2402MHz-2480MHz Exposure category General population/uncontrolled environment EUT Type Production Unit Device Type Portable 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 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 2 of 3 • 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 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 BT Classics Mode Channel Frequency(MHz) Peak Conducted Output Power (dBm) GFSK 0 2402 2.148 39 2441 2.424 78 2480 1.319 π/4DQPSK 0 2402 2.580 39 2441 2.879 78 2480 1.651 8-DPSK 0 2402 2.854 39 2441 3.254 78 2480 1.999 BLE Mode Channel Frequency(MHz) Peak Conducted Output Power (dBm) GFSK 0 2402 -0.121 19 2440 2.042 39 2480 1.233 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 3 of 3 5. Manufacturing Tolerance BT Classics GFSK (Peak) Channel Channel 0 Channel 39 Channel 78 Target (dBm) 2.0 2.0 2.0 Tolerance ±(dB) 1.0 1.0 1.0 π/4-DQPSK (Peak) Channel Channel 0…

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SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 32 FCC TEST REPORT For ABKO CO.,LTD Wireless Stereo Earbuds Test Model: EC10 Prepared for : ABKO CO.,LTD Address : M Signature 7th floor, 20, Magokjungang 1-ro, Gangseo-gu, Seoul, South Korea 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 : July 29, 2020 Number of tested samples : 1 Serial number : Prototype Date of Test : July 29, 2020 ~ August 11, 2020 Date of Report : August 11, 2020 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 2 of 32 FCC TEST REPORT FCC CFR 47 PART 15 C(15.247) Report Reference No. ................. : LCS200729004AEB Date of Issue ................................... : August 11, 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 .......................... : ABKO CO.,LTD Address ........................................... : M Signature 7th floor, 20, Magokjungang 1-ro, Gangseo-gu, Seoul, South Korea 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 2020-03 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. ........................... : Wireless Stereo Earbuds Trade Mark ...................................... : ABKO Model/ Type reference .................... : EC10 Ratings ............................................ : Earbuds: DC 3.7V by Battery(55mAh) Recharged by DC 5V 50mA Box: DC 3.7V By Battery(500mAh) Recharged By DC 5V 1000mA Result ............................................ : Positive Compiled by: Supervised by: Approved by: Lh Li/ Administrators Jin Wang/ Technique principal Gavin Liang/ Manager SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 3 of 32 FCC -- TEST REPORT Type / Model........................... : EC10 EUT......................................... : Wireless Stereo Earbuds Applicant............................... : ABKO CO.,LTD Address.................................. : M Signature 7th floor, 20, Magokjungang 1-ro, Gangseo-gu, Seoul, South Korea Telephone............................... : / Fax.......................................... : / Manufacturer........................ : ABKO CO.,LTD Address................................... : M Signature 7th floor, 20, Magokjungang 1-ro, Gangseo-gu, Seoul, South Korea Telephone............................... : / Fax.......................................... : / Factory................................... : ABKO CO.,LTD Address................................... : M Signature 7th floor, 20, Magokjungang 1-ro, Gangseo-gu, Seoul, South Korea 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. : LCS200729004AEB August 11, 2020 Date of issue SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 4 of 32 Revision History Revision Issue Date Revisions Revised By 000 August 11, 2020 Initial Issue Gavin Liang SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 5 of 32 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 CABLE ......................................................................................................................................... 6 1.4. DESCRIPTION OF TEST FACILITY ...…

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SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB Page 1 of 14 Appendix B RF Test Data for BT V5.0(BDR/EDR) (Conducted Measurement) Product Name: Wireless Stereo Earbuds Trade Mark: ABKO Test Model: EC10 Environmental Conditions Temperature: 25  C Relative Humidity: 50% ATM Pressure: 100.0 kPa Test Engineer: Li Huan Supervised by: Li Huan B.1 Duty Cycle Test Mode Test Channel Ant Duty Cycle[%] Verdict BT LE 2440 Ant1 89.07 PASS #im grbble1hchnnav SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB Page 2 of 14 B.2 Maximum Conducted Peak Output Power Mode Channel Conduct Peak Power[dBm] Limit [dBm] Verdict BT LE LCH -0.121 30 PASS BT LE MCH 2.042 30 PASS BT LE HCH 1.233 30 PASS Test Graphs LCH MCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB Page 3 of 14 HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB Page 4 of 14 B.3 Maximum Power Spectral Density Mode Channel PSD [dBm/3KHz] Limit [dBm/3KHz] Verdict BT LE LCH -16.899 8 PASS BT LE MCH -14.832 8 PASS BT LE HCH -15.548 8 PASS Test Graphs LCH MCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB Page 5 of 14 HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB Page 6 of 14 B.4 6dB Bandwidth Mode Channel 6dB Bandwidth [MHz] Limit [MHz] Verdict BT LE LCH 0.6641 ≥0.5 PASS BT LE MCH 0.6669 ≥0.5 PASS BT LE HCH 0.6657 ≥0.5 PASS Test Graphs LCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB Page 7 of 14 MCH HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB Page 8 of 14 B.5 RF Conducted Spurious Emissions Mode Channel Pref [dBm] Max. Level [dBm] Limit [dBm] Verdict BT LE LCH -0.346 -37.471 -20.346 PASS BT LE MCH 1.679 -36.393 -18.321 PASS BT LE HCH 1.120 -37.616 -18.880 PASS BT LE_LCH_Graphs Pref/BT LE/LCH Puw/BT LE/LCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB Page 9 of 14 BT LE_MCH_Graphs Pref/BT LE/MCH Puw/BT LE/MCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB Page 10 of 14 BT LE_HCH_Graphs Pref/BT LE/HCH Puw/BT LE/HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB Page 11 of 14 B.6 Band-edge for RF Conducted Emissions Mode Channel Carrier Power[dBm] Max.Spurious Level [dBm] Limit [dBm] Verdict BT LE LCH -0.341 -48.743 -20.34 PASS BT LE HCH 1.107 -49.412 -18.89 PASS Test Graphs LCH HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB Page 12 of 14 B.7 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 -43.06 2.0 0 54.17 PEAK 74 PASS Ant1 2310.0 -53.26 2.0 0 43.97 AV 54 PASS Ant1 2390.0 -43.02 2.0 0 54.21 PEAK 74 PASS Ant1 2390.0 -53.01 2.0 0 44.22 AV 54 PASS 2480 Ant1 2483.5 -42.54 2.0 0 54.69 PEAK 74 PASS Ant1 2483.5 -52.40 2.0 0 44.83 AV 54 PASS Ant1 2500.0 -42.29 2.0 0 54.94 PEAK 74 PASS Ant1 2500.0 -52.23 2.0 0 45.00 AV 54 PASS SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB Page 13 of 14 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: 2AWXK-ABKOEC10 Report No.: LCS200729004AEB Page 14 of 14 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: 2AWXK-ABKOEC10 _______________________________________________________________________________________________ 1. TEST SETUP PHOTOGRAPHS 1.1. Photo of Radiated Emissions Measurement Fig. 1 Fig. 2 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2AWXK-ABKOEC10 _______________________________________________________________________________________________ 1.2. Photo of Conducted Emissions Measurement Fig. 3