2A4C5-SD-1106wireless headset

SD110系列说明书 指示灯 按键操作 技术参数 Power on, unit is in bluetooth mode. Bluetooth mode: red and blue light flash alte rnately--waiting for pairing; Blue light is on-pairing successfully. FM mode--red light is on; TF mode--red light flashes. Charging--red light is on; Fully charged--blue light is on; Operation guide for Sd110 series headphone. Buttons operations System indicator lights Specifications FCC Warnning: 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 againstharmful interference in a residential installation. This equipment generates, uses and can radiateradio frequency energy and, if not installed and used in accordance with the instructions, maycause harmful interference to radio communications. However, there is no guarantee thatinterference will not occur in a particular installation. If this equipment does cause harmfulinterference to radio or television reception, which can be determined by turning the equipmentoff and on, the user is encouraged to try to correct the interference by one or more of thefollowing 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. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. 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. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 0cm between the radiator and your body.

Cosmo Fiber Corp. 1802 Santo Domingo Ave Duarte, CA 91010 Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2025/12/09 U.S. Agent Designation Cosmo Fiber Corp. acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought (FCC ID: 2A4C5-SD-1106): Name and company of U.S. agent: GLOCERTS TECHNOLOGY INC Physical U.S. address of agent: 19784 SUNKISSED RIDGE DR RIVERSIDE, CA 92507 United States FRN of U.S. agent: 0036339737 Email address of U.S. agent: [email protected] GLOCERTS TECHNOLOGY INC acknowledges their obligation to accept service of process on behalf of Cosmo Fiber Corp. Cosmo Fiber Corp. with the FRN [0031891609] accepts its obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. Sincerely, Signature Sidney Ru Manager Cosmo Fiber Corp. Signature Huiying Fan Director GLOCERTS TECHNOLOGY INC 48_[mo del] US_Agent_2.911(d)(7) - U, V0 5

FCC ID:2A4C5-SD-1106 External Photos of the EUT FCC ID:2A4C5-SD-1106 FCC ID:2A4C5-SD-1106

Label and Location Size: L: 1.0cm*W: 0.5cm Label and Location FCC ID:2A4C5-SD-1106

FCC ID:2A4C5-SD-1106 Internal Photos of the EUT FCC ID:2A4C5-SD-1106 ANT FCC ID:2A4C5-SD-1106

Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn RF Exposure evaluation Report Reference No. ..................... : FCC ID............................................. : CTA25112701202 2A4C5-SD-1106 Compiled by ( position+printed name+signature) . : File administrators Zoey Cao Supervised by ( position+printed name+signature) . : Project Engineer Ace Chai Approved by ( position+printed name+signature) . : RF Manager Eric Wang Date of issue .................................... : Dec. 03, 2025 Testing Laboratory Name .............. : Shenzhen CTA Testing Technology Co., Ltd. Address............................................ : Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Applicant’s name ............................ : Cosmo Fiber Corp. Address............................................ : 1802 Santo Domingo Ave Duarte, CA 91010 Standard ........................................... : 47CFR §1.1310 47CFR §2.1093 KDB447498 D01 General RF Exposure Guidance v06 Shenzhen CTA Testing Technology Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purpses as long as the Shenzhen CTA Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTA Testing Technology Co., 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. Test item description ..................... : wireless headset Trade Mark ....................................... : N/A Manufacturer .................................... : Cosmo Fiber Corp. Model/Type reference ...................... : SD-1106 Listed Models ................................... : N/A Ratings ............................................. : DC 3.7V From battery and DC 5.0V From external circuit Result ............................................... : PASS Report No.: CTA25112701202 Page 2 of 8 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn T E S T R E P O R T Equipment under Test : wireless headset Model /Type : SD-1106 Listed Models : N/A Applicant : Cosmo Fiber Corp. Address : 1802 Santo Domingo Ave Duarte, CA 91010 Manufacturer : Cosmo Fiber Corp. Address : 1802 Santo Domingo Ave Duarte, CA 91010 Test Result: PASS 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. Report No.: CTA25112701202 Page 3 of 8 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Contents 1 TEST STANDARDS ............................................................................................................ 4 2 SUMMARY .......................................................................................................................... 5 2.1 General Remarks ..................................................................................................... 5 2.2 Product Description ................................................................................................. 5 2.3 Special Accessories ................................................................................................. 5 2.4 Modifications ............................................................................................................ 5 3 TEST ENVIRONMENT ....................................................................................................... 6 3.1 Address of the test laboratory .................................................................................. 6 3.2 Test Facility .............................................................................................................. 6 3.3 Statement of the measurement uncertainty ............................................................. 6 4 Test limit .............................................................................................................................. 7 4.1 Requirement ............................................................................................................ 7 4.2 Conducted Power Results ....................................................................................... 7 4.3 Manufacturing tolerance .......................................................................................... 8 4.4 Evaluation Result ..................................................................................................... 8 4.5 Simultaneous Transmission for SAR Exclusion ...................................................... 8 5 Conclusion ........................................................................................................................... 8 Report No.: CTA25112701202 Page 4 of 8 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 1 T E S T S T A N D A R D S The tests were performed according to following standards: 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 447498 D01 General RF Exposure Guidance v06: Mob…

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1. Antenna Description: Antenna type PCB antenna Model SD-1106 Frequency range 2400-2500MHz Manufacturer Cosmo Fiber Corp. Address 1802 Santo Domingo Ave Duarte, CA 91010 ANT Peak Gain 0.76 dBi 2. Antenna Photo: Length :17.99mm Width:2.34mm 3. Test Equipment & Conditions 3.1 Test instrument VSWR is tested using Agilent E5071B connected to a hand mechanism, and the status is free space. 3.2 Test environment and methods 4．Antenna Radiation Pattern 2400MHz 2450MHz 2500MHz

Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn FCC PART 15 SUBPART C TEST REPORT FCC PART 15.247 Report Reference No. .................... : FCC ID. ........................................... : CTA25112701201 2A4C5-SD-1106 Compiled by ( position+printed name+signature) . : File administrators Zoey Cao Supervised by ( position+printed name+signature) . : Project Engineer Ace Chai Approved by ( position+printed name+signature) . : RF Manager Eric Wang Date of issue .................................... : Dec. 03, 2025 Testing Laboratory Name .............. : Shenzhen CTA Testing Technology Co., Ltd. Address ............................................ : Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Applicant’s name ........................... : Cosmo Fiber Corp. Address ............................................ : 1802 Santo Domingo Ave Duarte, CA 91010 Test specification ........................... : Standard ........................................... : FCC Part 15.247 Shenzhen CTA Testing Technology Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen CTA Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTA Testing Technology Co., 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. Test item description ..................... : wireless headset Trade Mark ....................................... : N/A Manufacturer .................................... : Cosmo Fiber Corp. Model/Type reference ...................... : SD-1106 Listed Models ................................... : N/A Modulation ....................................... : GFSK, Π/4DQPSK, 8DPSK Frequency ........................................ : From 2402MHz to 2480MHz Ratings ............................................. : DC 3.7V From battery and DC 5.0V From external circuit Result ............................................... : PASS Report No.: CTA25112701201 Page 2 of 36 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn T E S T R E P O R T Equipment under Test : wireless headset Model /Type : SD-1106 Listed Models : N/A Applicant : Cosmo Fiber Corp. Address : 1802 Santo Domingo Ave Duarte, CA 91010 Manufacturer : Cosmo Fiber Corp. Address : 1802 Santo Domingo Ave Duarte, CA 91010 Test Result: PASS 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. Report No.: CTA25112701201 Page 3 of 36 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Contents 1 TEST STANDARDS ...................................................................................................................................... 4 2 SUMMARY .................................................................................................................................................... 5 2.1 General Remarks .............................................................................................................................. 5 2.2 Product Description ........................................................................................................................... 5 2.3 Equipment Under Test ....................................................................................................................... 5 2.4 Short description of the Equipment under Test (EUT) ...................................................................... 5 2.5 EUT configuration .............................................................................................................................. 6 2.6 EUT operation mode ......................................................................................................................... 6 2.7 Block Diagram of Test Setup ............................................................................................................. 6 2.8 Related Submittal(s) / Grant (s) ......................................................................................................... 6 2.9 Modifications ...................................................................................................................................... 6 3 TEST ENVIRONMENT ................................................................................................................................. 7 3.1 Address of the test laboratory ........................................................................................................... 7 3.2 Test Facility........................................................................................................................................ 7 3.3 Environmental conditions .................................................................................................................. 7 3.4 Summary of measurement results .................................................................................................... 8 3.5 Statement of the measurement uncertainty ...................................................................................... 9 3.6 …

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1 FCC Appendix RF Test Data for BT FCC ID : 2A4C5-SD-1106 Company : Cosmo Fiber Corp. EUT : wireless headset Model Number : SD-1106 Report No. : CTA25112701201 Reviewed By : Eric Wang 2 Appendix A: 20dB Emission Bandwidth Test Result TestMode Antenna Freq(MHz) 20dB EBW[MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict DH5 Ant1 2402 0.954 2401.547 2402.501 --- --- 2441 0.942 2440.553 2441.495 --- --- 2480 0.945 2479.550 2480.495 --- --- 2DH5 Ant1 2402 1.278 2401.385 2402.663 --- --- 2441 1.284 2440.379 2441.663 --- --- 2480 1.341 2479.340 2480.681 --- --- 3DH5 Ant1 2402 1.308 2401.355 2402.663 --- --- 2441 1.281 2440.379 2441.660 --- --- 2480 1.311 2479.358 2480.669 --- --- 3 Test Graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 4 2DH5_Ant1_2402 2DH5_Ant1_2441 5 2DH5_Ant1_2480 3DH5_Ant1_2402 3DH5_Ant1_2441 6 3DH5_Ant1_2480 7 Appendix B: Occupied Channel Bandwidth Test Result TestMode Antenna Freq(MHz) OCB [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict DH5 Ant1 2402 0.87962 2401.5736 2402.4532 --- --- 2441 0.86787 2440.5747 2441.4426 --- --- 2480 0.87068 2479.5771 2480.4478 --- --- 2DH5 Ant1 2402 1.1914 2401.4160 2402.6074 --- --- 2441 1.1924 2440.4149 2441.6073 --- --- 2480 1.1895 2479.4167 2480.6062 --- --- 3DH5 Ant1 2402 1.1868 2401.4183 2402.6051 --- --- 2441 1.1917 2440.4162 2441.6079 --- --- 2480 1.1900 2479.4159 2480.6059 --- --- 8 Test Graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 9 2DH5_Ant1_2402 2DH5_Ant1_2441 10 2DH5_Ant1_2480 3DH5_Ant1_2402 3DH5_Ant1_2441 11 3DH5_Ant1_2480 12 Appendix C: Maximum conducted output power Test Result Peak Test Mode Antenna Freq(MHz) Conducted Peak Powert[dBm] Conducted Limit[dBm] Verdict DH5 Ant1 2402 -0.14 ≤20.97 PASS 2441 -0.35 ≤20.97 PASS 2480 -0.43 ≤20.97 PASS 2DH5 Ant1 2402 2.61 ≤20.97 PASS 2441 2.30 ≤20.97 PASS 2480 2.24 ≤20.97 PASS 3DH5 Ant1 2402 2.63 ≤20.97 PASS 2441 2.34 ≤20.97 PASS 2480 2.29 ≤20.97 PASS 13 Appendix D: Carrier frequency separation Test Result TestMode Antenna Freq(MHz) Result[MHz] Limit[MHz] Verdict DH5 Ant1 Hop 1.012 ≥0.954 PASS 2DH5 Ant1 Hop 0.98 ≥0.894 PASS 3DH5 Ant1 Hop 1.292 ≥0.874 PASS 14 Test Graphs DH5_Ant1_Hop 2DH5_Ant1_Hop 3DH5_Ant1_Hop 15 16 Appendix E: Time of occupancy Test Result TestMode Antenna Freq(MHz) BurstWidth [ms] TotalHops [Num] Result[s] Limit[s] Verdict DH1 Ant1 Hop 0.390 318 0.124 ≤0.4 PASS DH3 Ant1 Hop 1.650 157 0.259 ≤0.4 PASS DH5 Ant1 Hop 2.900 112 0.325 ≤0.4 PASS 2DH1 Ant1 Hop 0.380 318 0.121 ≤0.4 PASS 2DH3 Ant1 Hop 1.640 167 0.274 ≤0.4 PASS 2DH5 Ant1 Hop 2.900 110 0.319 ≤0.4 PASS 3DH1 Ant1 Hop 0.380 318 0.121 ≤0.4 PASS 3DH3 Ant1 Hop 1.640 141 0.231 ≤0.4 PASS 3DH5 Ant1 Hop 2.900 120 0.348 ≤0.4 PASS 17 Test Graphs DH1_Ant1_Hop DH3_Ant1_Hop 18 DH5_Ant1_Hop 19 2DH1_Ant1_Hop 2DH3_Ant1_Hop 20 2DH5_Ant1_Hop 21 3DH1_Ant1_Hop 3DH3_Ant1_Hop 22 3DH5_Ant1_Hop 23 24 Appendix F: Number of hopping channels Test Result TestMode Antenna Freq(MHz) Result[Num] Limit[Num] Verdict DH5 Ant1 Hop 79 ≥15 PASS 2DH5 Ant1 Hop 79 ≥15 PASS 3DH5 Ant1 Hop 79 ≥15 PASS 25 Test Graphs DH5_Ant1_Hop 2DH5_Ant1_Hop 3DH5_Ant1_Hop 26 27 Appendix G: Band edge measurements Test Result TestMode Antenna ChName Freq(MHz) RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 Low 2402 -0.23 -56.26 ≤-20.23 PASS High 2480 -0.94 -56.7 ≤-20.94 PASS Low Hop_2402 -0.57 -54.08 ≤-20.57 PASS High Hop_2480 -0.97 -63.24 ≤-20.97 PASS 2DH5 Ant1 Low 2402 -1.83 -50.76 ≤-21.83 PASS High 2480 -0.93 -54.05 ≤-20.93 PASS Low Hop_2402 -1.11 -52.99 ≤-21.11 PASS High Hop_2480 -0.48 -63.09 ≤-20.48 PASS 3DH5 Ant1 Low 2402 -0.15 -51.79 ≤-20.15 PASS High 2480 -0.35 -52.83 ≤-20.35 PASS Low Hop_2402 -0.21 -54.59 ≤-20.21 PASS High Hop_2480 -1.18 -62.04 ≤-21.18 PASS 28 Test Graphs DH5_Ant1_Low_2402 DH5_Ant1_High_2480 DH5_Ant1_Low_Hop_2402 29 DH5_Ant1_High_Hop_2480 2DH5_Ant1_Low_2402 30 2DH5_Ant1_High_2480 2DH5_Ant1_Low_Hop_2402 2DH5_Ant1_High_Hop_2480 31 3DH5_Ant1_Low_2402 3DH5_Ant1_High_2480 32 3DH5_Ant1_Low_Hop_2402 3DH5_Ant1_High_Hop_2480 33 Appendix H: Conducted Spurious Emission Test Result TestMode Antenna Freq(MHz) FreqRange [MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 2402 Reference -1.15 -1.15 --- PASS 30~1000 -1.15 -68.29 ≤-21.15 PASS 1000~26500 -1.15 -43.04 ≤-21.15 PASS 2441 Reference -1.57 -1.57 --- PASS 30~1000 -1.57 -67.96 ≤-21.57 PASS 1000~26500 -1.57 -43.88 ≤-21.57 PASS 2480 Reference -1.18 -1.18 --- PASS 30~1000 -1.18 -66.93 ≤-21.18 PASS 1000~26500 -1.18 -43.82 ≤-21.18 PASS 2DH5 Ant1 2402 Reference -1.94 -1.94 --- PASS 30~1000 -1.94 -68.47 ≤-21.94 PASS 1000~26500 -1.94 -44.39 ≤-21.94 PASS 2441 Reference -0.56 -0.56 --- PASS 30~1000 -0.56 -68.41 ≤-20.56 PASS 1000~26500 -0.56 -46.07 ≤-20.56 PASS 2480 Reference -1.01 -1.01 --- PASS 30~1000 -1.01 -68.1 ≤-21.01 PASS 1000~26500 -1.01 -46.77 ≤-21.01 PASS 3DH5 Ant1 2402 Reference -2.81 -2.81 --- PASS 30~1000 -2.81 -68.25 ≤-22.81 PASS 1000~26500 -2.81 -44.34 ≤-22.81 PASS 2441 Reference -2.91 -2.91 --- PASS 30~1000 -2.91 -67.86 ≤-22.91 PASS 1000~26500 -2.91 -43.46 ≤-22.91 PASS 2480 Reference -1.11 -1.11 --- PASS 30~1000 -1.11 -63.8 ≤-21.11 PASS 1000~26500 -1.11 -46 ≤-21.11 PASS 34 Test Graphs DH5_Ant1_2402_0~Reference DH5_Ant1_2402_30~1000 DH5_Ant1_2402_1000~26500 35 DH5_Ant1_2441_0~Reference DH5_Ant1_2441_30~1000

36 DH5_Ant1_2441_1000~26500 DH5_Ant1_2480_0~Reference DH5_Ant1_2480_30~1000 37 DH5_Ant1_2480_1000~26500 2DH5_Ant1_2402_0~Reference 38 2DH5_Ant1_2402_30~1000 2DH5_Ant1_2402_1000~26500 2DH5_Ant1_2441_0~Reference 39 2DH5_Ant1_2441_30~1000 2DH5_Ant1_2441_1000~26500 40 2DH5_Ant1_2480_0~Reference 2DH5_Ant1_2480_30~1000 2DH5_Ant1_2480_1000~26500 41 3DH5_Ant1_2402_0~Reference 3DH5_Ant1_2402_30~1000 42 3DH5_Ant1_2402_1000~26500 3DH5_Ant1_2441_0~Reference 3DH5_Ant1_2441_30~1000 43 3DH5_Ant1_2441_1000~26500 3DH5_Ant1_2480_0~Reference 44 3DH5_Ant1_2480_30~1000 3DH5_Ant1_2480_1000~26500 45 Appendix I: Duty Cycle Test Result TestMode Antenna Freq(MHz) ON Time [ms] Period [ms] DC [%] xFactor Limit Verdict DH5 Ant1 2402 2.91 3.75 77.60 1.10 --- --- 2441 2.92 3.75 77.87 1.09 --- --- 2480 2.92 3.75 77.87 1.09 --- --- 2DH5 Ant1 2402 2.92 3.75 77.87 1.09 --- --- 2441 2.92 3.75 77.87 1.09 --- --- 2480 2.91 3.75 77.60 1.10 --- --- 3DH5 Ant1 2402 2.92 3.75 77.87 1.09 --- --- 2441 2.92 3.75 77.87 1.09 --- --- 2480 2.91 3.75 77.60 1.10 --- --- 46 Test Graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 47 2DH5_Ant1_2402 2DH5_Ant1_2441 48 2DH5_Ant1_2480 3DH5_Ant1_2402 3DH5_Ant1_2441 49 3DH5_Ant1_2480

FCC ID:2A4C5-SD-1106 Test Setup Photos of the EUT FCC ID:2A4C5-SD-1106