2BGKA-L1Bluetooth Headphones

FCC Caution 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. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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 are designed 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. The device has been evaluated to meet general RF exposure requirement. This equipment should be installed and operated with minimum distance 0mm between the radiator & your body.

SMD CERAMIC ANTENNA Data Sheet CS-2450-21-C For 2400-2483MHz 2.0x1.2mm [EIA2012] Manufacturer: Shenzhen Keweixin Electronics Co., Ltd. Add.: Factory Building B802-58, No.1, Longgang Tian 'an Digital Innovation Park, 524 Qinglin Road, Huanggekeng Community, Longcheng Street, Longgang District, Shenzhen Chip Antenna TECHNOLOGY Feature ■ Light weight, compact ■ Wide bandwidth, low cost ■ Built-in antenna with high gain ■ Operating Temp. : -40°C ~ +85°C Application ■ Bluetooth, Wireless LAN, Mobile TV ■ Home RF system, etc Electrical Characteristics per line( TA = 2 5 °C ) Parameter Specification Units Frequency Band 2400~2483 MHz Polarization Linear * Peak Gain 2.36 dBi * Peak Efficiency 72.5% % Impendance 50 Ω * Test condition: Test board size 98* 65 mm; Matching circuit: Pi matching circuit will be required Typical Characteristics Fig. 1 VSWR Chip Antenna TECHNOLOGY Radiation Pattern The Gain pattern is measured in FAR - field chamber. DUT is placed on the table of rotator , a standard horn antenna and Vector Network Analyzer is used to collect data. Fig.2 FAR-field hamber 3D Gain Pattern (2400 MHz) Chip Antenna TECHNOLOGY 3D Gain Pattern (2450 MHz) 3D Gain Pattern (2500 MHz) Chip Antenna TECHNOLOGY Item Condition Specification Thermal shock 1. 30±3 minutes at -40 ° C±5 ° C , 2. Convert to +105 ° C (5 minutes) 3. 30±3 minutes at +105 °C±5 ° C , 4. Convert to -40 ° C (5 minutes) 5. Total 100 continuous cycles No apparent damage Fulfill the electrical spec. after test. Humidity resistance 1. Humidity: 85% R.H. 2. Temperature: 85±5 ° C 3. Time: 1000 hours . No apparent damage Fulfill the electrical spec. after test. High temperature resistance No apparent damage Fulfill the electrical spec. after test. 1. Temperature: 150 °C±5 °C 2. Time: 1000 hours . Low temperature resistance 1 . Temperature: -40 ° C±5 ° C 2 . Time: 1000 hours . No apparent damage Fulfill the electrical spec. after test. Soldering heat resistance 1. Solder bath temperature : 260±5°C 2. Bathing time: 10±1 seconds No apparent damage Solderability The dipped surface of the terminal shall be at least 95% covered with solder after dipped in solder bath of 245±5°C for 3±1 seconds . No apparent damage (2) Storage Condition (a) At warehouse: The temperature should be within 0 ~ 30°C and humidity should be less than 60% RH.The product should be used within 1 year from the time of elivery. (b) On board: The temperature should be within -40 ~ 85 °C and humidity should be less than 85 % RH. ( 3 ) Operating Temperature Range Operating temperature range : -40°C to +85°C . Recommended Reflow Solder curve Chip Antenna TECHNOLOGY 1 0.3±0.1 ( 1) Soldering Gun Procedure Note the follows, in case of using solder gun for replacement. (a) The tip temperature must be less than 350°C for the period within 3 seconds by using soldering gun under 30 W. (b) The soldering gun tip s hall not touch this product directly. ( 2) Soldering Volume Note that excess of soldering volume will easily get crack the body of this product. Product Dimension Recommend Pad & Evaluation Board Chip Antenna TECHNOLOGY Application Guide Package Information A B C D E F L W 8.00±0.3 3.50± 0.05 1.75±0.1 2.00±0.05 4.00±0.1 1.50±0.1 2.30± 0.1 1.55± 0.1 Part Number System CS - 2450 - 21-C External Dimensions L*W (mm) 2.0*1.2 Central Frequency 2450MHz Product Series: Chip Antenna Marking Chip Antenna TECHNOLOGY Order Information Device Package Net Weight Carrier Quantity HSF Status CS-2450-21-C 2012 0.0047g Tape&Reel 5000pcs RoHS compliant Revision history Date Revision Description of changes 2021-11-5 1.0 First Version 2022-04-2 2.0 The contents of this data sheet are subject to change without notice . Please confirm the specifications and delivery conditions when placing your order. © Copyright 2015 , Keweixin Electronics All rights reserved

Page 1 of 4 Report No.: LGT24E078 Appendix - External Photographs of EUT Constructional Details Model: L1 Photo 1 Photo 2 Page 2 of 4 Report No.: LGT24E078 Photo 3 Photo 4 Right Right Page 3 of 4 Report No.: LGT24E078 Photo 5 Photo 6 Right Right Page 4 of 4 Report No.: LGT24E078 Photo 7 Right Right

Label Size: 10mm X5mm

Page 1 of 4 Report No.: LGT24E078 Appendix - Internal Photographs of EUT Constructional Details Model: L1 Photo 1 Photo 2 Right Right Page 2 of 4 Report No.: LGT24E078 Photo 3 Photo 4 ANT Right Right Page 3 of 4 Report No.: LGT24E078 Photo 5 Photo 6 Right Right Page 4 of 4 Report No.: LGT24E078 Photo 7 Right

The test report is effective only with both signature and specialized stamp. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report only apply to the tested sample. Shenzhen LGT Test Service Co., Ltd. Tel: 0755-89668180 E-mail:[email protected] Web: www.lgt-cert.com Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China RF TEST REPORT Product Name: Bluetooth Headphones Model Name: L1 FCC ID: 2BGKA-L1 Issued For : Qingdao Guanxin Technology Co., Ltd 1808, 18th Floor, Building B, Shenghe Building, No. 58 Shandong Tou Road, Laoshan District, Qingdao City, Shandong Province Issued By : Shenzhen LGT Test Service Co., Ltd. Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Report Number: LGT24E078HA01 Sample Received Date: Jun. 18, 2024 Date of Test: Jun. 18, 2024 – Jun. 28, 2024 Date of Issue: Jun. 28, 2024 Report No.: LGT24E078HA01 Page 2 of 9 TEST REPORT CERTIFICATION Applicant: Qingdao Guanxin Technology Co., Ltd Address: 1808, 18th Floor, Building B, Shenghe Building, No. 58 Shandong Tou Road, Laoshan District, Qingdao City, Shandong Province Manufacture: Qingdao Guanxin Technology Co., Ltd Address: 1808, 18th Floor, Building B, Shenghe Building, No. 58 Shandong Tou Road, Laoshan District, Qingdao City, Shandong Province Product Name: Bluetooth Headphones Trademark: Drmpy Model Name: L1 Sample Status: Normal APPLICABLE STANDARDS STANDARD TEST RESULTS FCC 47 CFR §2.1093 KDB 447498 D01 General RF Exposure Guidance v06 PASS Prepared by: Approved by: Zane Shan Vita Li Engineer Technical Director Report No.: LGT24E078HA01 Page 3 of 9 TABLE OF CONTENTS 1 . GENERAL INFORMATION 5 1.1 GENERAL DESCRIPTION OF THE EUT 5 1.2 TEST LABORATORY 5 2 . FCC 47CFR §2.1093 REQUIREMENT 6 2.1 TEST STANDARDS 6 2.2 LIMIT 6 2.3 TEST RESULT 8 APPENDIX I - PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS 9 Report No.: LGT24E078HA01 Page 4 of 9 Revision History Rev. Issue Date Revisions 00 Jun. 28, 2024 Initial Issue Report No.: LGT24E078HA01 Page 5 of 9 1. GENERAL INFORMATION 1.1 GENERAL DESCRIPTION OF THE EUT Product Name: Bluetooth Headphones Trademark: Drmpy Model Name: L1 Series Model: N/A Model Difference: N/A Frequency Bands: Bluetooth 2402 – 2480 MHz Rating: Input: 5V 200mA Battery: Capacity: 300mAh 60mAh Rated Voltage: 3.7V Hardware Version: V02 Software Version: 5.4 1.2 TEST LABORATORY Company Name: Shenzhen LGT Test Service Co., Ltd. Address: Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Accreditation Certificate A2LA Certificate No.: 6727.01 FCC Registration No.: 746540 CAB ID: CN0136 Report No.: LGT24E078HA01 Page 6 of 9 2. FCC 47CFR §2.1093 REQUIREMENT 2.1 TEST STANDARDS The limit for Maximum Permissible Exposure (MPE) specified in KDB 447498 D01 General RF Exposure Guidance v06 is followed. The gain of the antennas used in the product is extracted from the Antenna data sheets provided and also the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, we can calculate the distance, away from the product, where the limit of MPE is reached. Although the Friis Transmission formula is far field assumption, the calculated result of that is an over-prediction for near field power density. It is taken as worst case to specify the safety range. 2.2 LIMIT Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. Report No.: LGT24E078HA01 Page 7 of 9 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. Report No.: LGT24E078HA01 Page 8 of 9 2.3 TEST RESULT Turn up Result Mode Turn up Power BT-GFSK -1.5±1dBm BT-π/4-DQPSK -0.5±1dBm BT-8DPSK 0±1dBm BLE 1M-GFSK -1±1dBm BLE 2M-GFSK -1±1dBm The MPE result of worst mode: RF Function Frequency (MHz) Max Turn up Power (dBm) Max Turn up Power (mW) Estimated SAR Limit Ratio Result BT 2441 1.00 1.26 0.393 3 0.131 Pass BLE 2440 0.00 1.00 0.312 3 0.104 Pass Note: 1. The estimated SAR≤ 3.0 for 1-g SAR, Separation distance ≤ 5mm, complies with the exemption requirements. Report No.: LGT24E078HA01 Page 9 of 9 APPENDIX I - PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Note: Please see the attached L1_External Photos and L1_Internal Photos. ※※※※※END OF THE REPORT※※※※※

The test report is effective only with both signature and specialized stamp. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report only apply to the tested sample. Shenzhen LGT Test Service Co., Ltd. Tel: 0755-89668180 E-mail:[email protected] Web: www.lgt-cert.com Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China RF TEST REPORT Product Name: Bluetooth Headphones Model Name: L1 FCC ID: 2BGKA-L1 Issued For : Qingdao Guanxin Technology Co., Ltd 1808, 18th Floor, Building B, Shenghe Building, No. 58 Shandong Tou Road, Laoshan District, Qingdao City, Shandong Province Issued By : Shenzhen LGT Test Service Co., Ltd. Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Report Number: LGT24E078RF01 Sample Received Date: Jun. 18, 2024 Date of Test: Jun. 18, 2024 – Jun. 28, 2024 Date of Issue: Jun. 28, 2024 Report No.: LGT24E078RF01 Page 2 of 78 TEST REPORT CERTIFICATION Applicant: Qingdao Guanxin Technology Co., Ltd Address: 1808, 18th Floor, Building B, Shenghe Building, No. 58 Shandong Tou Road, Laoshan District, Qingdao City, Shandong Province Manufacturer: Qingdao Guanxin Technology Co., Ltd Address: 1808, 18th Floor, Building B, Shenghe Building, No. 58 Shandong Tou Road, Laoshan District, Qingdao City, Shandong Province Product Name: Bluetooth Headphones Trademark: Drmpy Model Name: L1 Sample Status: Normal APPLICABLE STANDARDS STANDARD TEST RESULTS FCC Part 15.247, Subpart C ANSI C63.10-2013 PASS Prepared by: Approved by: Zane Shan Vita Li Engineer Technical Director Report No.: LGT24E078RF01 Page 3 of 78 Table of Contents Page 1. SUMMARY OF TEST RESULTS 6 1.1 TEST FACTORY 7 1.2 MEASUREMENT UNCERTAINTY 7 2. GENERAL INFORMATION 8 2.1 GENERAL DESCRIPTION OF THE EUT 8 2.2 DESCRIPTION OF THE TEST MODES 10 2.3 FREQUENCY HOPPING SYSTEM REQUIREMENTS 10 2.4 TABLE OF PARAMETERS OF TEST SOFTWARE SETTING 12 2.5 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 12 2.6 EQUIPMENTS LIST 13 3. EMC EMISSION TEST 14 3.1 CONDUCTED EMISSION MEASUREMENT 14 3.2 RADIATED EMISSION MEASUREMENT 18 4. CONDUCTED SPURIOUS & BAND EDGE EMISSION 30 4.1 LIMIT 30 4.2 TEST PROCEDURE 30 4.3 TEST SETUP 31 4.4 EUT OPERATION CONDITIONS 31 4.5 TEST RESULTS 31 5. NUMBER OF HOPPING CHANNEL 32 5.1 LIMIT 32 5.2 TEST PROCEDURE 32 5.3 TEST SETUP 32 5.4 EUT OPERATION CONDITIONS 32 5.5 TEST RESULTS 32 6. AVERAGE TIME OF OCCUPANCY 33 6.1 LIMIT 33 6.2 TEST PROCEDURE 33 6.3 TEST SETUP 33 6.4 EUT OPERATION CONDITIONS 33 6.5 TEST RESULTS 33 7. HOPPING CHANNEL SEPARATION MEASUREMEN 34 7.1 LIMIT 34 7.2 TEST PROCEDURE 34 Report No.: LGT24E078RF01 Page 4 of 78 7.3 TEST SETUP 34 7.4 EUT OPERATION CONDITIONS 34 7.5 TEST RESULTS 34 8. BANDWIDTH TEST 35 8.1 LIMIT 35 8.2 TEST PROCEDURE 35 8.3 TEST SETUP 35 8.4 EUT OPERATION CONDITIONS 35 8.5 TEST RESULTS 35 9. OUTPUT POWER TEST 36 9.1 LIMIT 36 9.2 TEST PROCEDURE 36 9.3 TEST SETUP 36 9.4 EUT OPERATION CONDITIONS 36 9.5 TEST RESULTS 36 10. ANTENNA REQUIREMENT 37 10.1 STANDARD REQUIREMENT 37 10.2 EUT ANTENNA 37 APPENDIX I - TEST RESULTS 38 DUTY CYCLE 38 MAXIMUM PEAK CONDUCTED OUTPUT POWER 42 -20DB BANDWIDTH 43 OCCUPIED CHANNEL BANDWIDTH 47 CARRIER FREQUENCIES SEPARATION 51 BAND EDGE 55 BAND EDGE(HOPPING) 60 CONDUCTED RF SPURIOUS EMISSION 65 NUMBER OF HOPPING CHANNEL 72 DWELL TIME 74 APPENDIX II - MEASUREMENT PHOTOS 77 APPENDIX III - PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS 78 Report No.: LGT24E078RF01 Page 5 of 78 Revision History Rev. Issue Date Revisions 00 Jun. 28, 2024 Initial Issue Report No.: LGT24E078RF01 Page 6 of 78 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: KDB 558074 D01 15.247 Meas Guidance v05r02. FCC Part 15.247, Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS -- 15.247(a)(1) Hopping Channel Separation PASS -- 15.247(a)(1)&(b)(1) Output Power PASS -- 15.209 Radiated Spurious Emission PASS -- 15.247(d) Conducted Spurious & Band Edge Emission PASS -- 15.247(a)(1)(iii) Number of Hopping Frequency PASS -- 15.247(a)(1)(iii) Dwell Time PASS -- 15.247(a)(1) Bandwidth PASS -- 15.205 Restricted bands of operation PASS -- Part 15.247(d)/part 15.209(a) Band Edge Emission PASS -- 15.203 Antenna Requirement PASS -- NOTE: (1) ‘N/A’ denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2013. Report No.: LGT24E078RF01 Page 7 of 78 1.1 TEST FACTORY Company Name: Shenzhen LGT Test Service Co., Ltd. Address: Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Accreditation Certificate A2LA Certificate No.: 6727.01 FCC Registration No.: 746540 CAB ID: CN0136 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 RF output power, conducted ±0.68dB 2 Unwanted Emissions, conducted ±2.988dB 3 All emissions, radiated 9K-30MHz ±2.84dB 4 All emissions, radiated 30M-1GHz ±4.39dB 5 All emissions, radiated 1G-6GHz ±5.10dB 6 All emissions, radiated>6G ±5.48dB 7 Conducted Emission (9KHz-150KHz) ±2.79dB 8 Conducted Emission (150KHz-30MHz) ±2.80dB Note: The measurement uncertainty is not included in the test result. Report No.: LGT24E078RF01 Page 8 of 78 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name: Bluetooth Headphones Trademark: Drmpy Model Name: L1 Series Model: N/A Model Difference: N/A Channel List: Please refer to the Note 3. Bluetooth: Frequency:2402 – 2480 MHz Modulation: GFSK(1Mbps), π/4-DQPSK(2Mbps), 8DPSK(3Mbps) Antenna Type: Chip Antenna Gain: 2.36dBi Rating: Input: 5V 200mA Battery: Capacity: 300mAh…

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Page 1 of 2 Report No.: LGT24E078 Appendix - Test Setup photos Set-up for Radiated Spurious Emission, Below 1GHz Set-up for Radiated Spurious Emission, Above 1GHz Page 2 of 2 Report No.: LGT24E078 Set-up for Conducted Emission