2BFQH-YD03Wireless Headset

FCC Warning 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. NOTE 1: 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. NOTE 2: Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. Operating Frequency Band:2402-2480MHz Maximum Radio-Frequency Power:≤10dBM I.Button Functions 1.Power On:Remove the earbuds from the charging case,and they will utomatically power on and pair.Alternatively,long-press the touch button for 3-5 seconds to turn on.2.Power Off:Place the earbuds back in the charging case to turn them off automatically,orl ong-press the touch button for3-5 seconds to turn off. 3.Play/Pause:While playing,tap one of the earbuds'touch buttons to pause playback.In pause mode,tap again to resume playback.4.Answer/End Cal:When there is an incoming call,tap one of the earbuds'to uch buttons to answer.During the call,tap the same touch button to end the call.5.Reject Call:When there is an incoming call,long- press the touch button for2-3 seconds to reject the call. II.How to Power On and Pair the Earbuds 1.Remove both earbuds from the charging case simultaneously(Note:both must be taken out at the same time).The earbuds will automatically power on and begin pairing.Wait for 5to 30 seconds.When one earbud keeps flashing and the other goes off,it indicates successful pairing.Then,turn on your phone's wireless,search for the corresponding earbud device name,and connect. 2.If one earbud is not producing sound(mono mode),place both earbuds back in the charging case.Wait a few seconds,then take them out again.Wait for 5 to 30 seconds.Turn on the wireless on your phone,find the paired device,unpair it,and then turn off and on the wireless to reconnect.3.Ifyour phone cannot find the earbuds,place both earbuds back in the charging case,wait a few seconds,take them out again,and wait for 5to 30 seconds.Turn onwirelesson your phone,search for the earbuds,and connect. lI Usage Notes 1.Do not treat the product with force or crush it with heavyobjects.Keep it away from high-temperature,high-humidityenvironments.2.Keep the product away from Wi-Firoutersand other high-frequency transmitting devices,as this mayaffect signal reception,leading to sound lag or disconnection. 3.Use the product within an effective range(10-15meters).Ensure there are no physical obstructions(such aswalls)between the wireless device and the earbuds.4.Thisproduct does not support USB PD fast charging. The chargermust provide power within the range of1watt to 5 watts toensure maximum charging speed

Hangzhou banzi Trading Co., Ltd Covered Equipment Certification Attestation Letter 5/6/2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2BFQH-YD03 Hangzhou banzi Trading Co., Ltd (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. Hangzhou banzi Trading Co., Ltd (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Hangzhou banzi Trading Co., Ltd (“the applicant”) certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Signed: Printed name: zhifeng wan Title: Manager Company Name: Hangzhou banzi Trading Co., Ltd Date: 5/6/2026

Hangzhou banzi Trading Co., Ltd U.S. Agent Letter of Attestation To: Federal Communications Commission 7435 Oakland Mills Road, Columbia, MD 21046, USA Date: May 6, 2026 Ref: Attestation Statement – Part 2.911(d)(7) filing FCC ID: 2BFQH-YD03 Hangzhou banzi Trading Co., Ltd(“the applicant”) certifies that, as of the date of the filing of the application, CLF Import and Export Limited (“the agent”) is our designated U.S. agent for service of process for the above reference FCC ID. The applicant accepts 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. The applicant further acknowledges it is our responsibility to inform the FCC whenever the agent information changes. CLF Import and Export Limited ("the agent) understand it is the agent's obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address. Designated U.S. Agent Company Name: CLF Import and Export Limited FRN: 0033489683 Address: 1312 17th Street #692, Denver, CO 80202, United States Signature: Contact Person: David Chen Tel: +1 949 254 2565 Email: [email protected] Applicant Hangzhou banzi Trading Co., Ltd FRN: 0035247717 Address: No. C071, Building 1, Agricultural Products Park, Youyi Village, Yangxi Street Jiande, China Signature: Contact Person: zhifeng wan Tel: +86 15013852535 Email: [email protected]

DATE: May 6, 2026 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act as Agent On our behalf, I appoint Shenzhen CCUT Quality Technology Co., Ltd. (1F, Building 35, Changxing Technology Indstrl Park Changzhen Community, Yutang Street, Shenzhen, China) to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commission’s regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, still resides with Hangzhou banzi Trading Co., Ltd (No. C071, Building 1, Agricultural Products Park, Youyi Village, Yangxi Street Jiande, China). <Signature> Name: zhifeng wan Title: Manager Applicant Company: Hangzhou banzi Trading Co., Ltd

Date: May 6, 2026 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Compliance Testing, LLC to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). Sincerely, <Signature> Name: zhifeng wan Title: Manager Company: Hangzhou banzi Trading Co., Ltd

DATE: May 6, 2026 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2BFQH-YD03 Product Name: Wireless Headset Product Model: YD03 Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commission’s rules, we hereby request that the following documents be held confidential: (List here the documents for which you are seeking confidentiality – for example ...)  Schematics  Block diagram  Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. <Signature> Name: zhifeng wan Title: Manager Company: Hangzhou banzi Trading Co., Ltd

Report No: SSP26040156-1E FCC ID: 2BFQH-YD03 Annex of Test Report Annex A. EUT External Photos Model : YD03 EUT View 1 EUT View 2 Report No: SSP26040156-1E FCC ID: 2BFQH-YD03 Annex of Test Report EUT View 3 EUT View 4 Report No: SSP26040156-1E FCC ID: 2BFQH-YD03 Annex of Test Report EUT View 5 EUT View 6 Report No: SSP26040156-1E FCC ID: 2BFQH-YD03 Annex of Test Report EUT View 7

Report No: SSP26040156-1E FCC ID: 2BFQH-YD03 Annex of Test Report Annex D. Label and Inf ormation FCC Label Sample Label Size: 10mm*5mm FCC Label Specifications Text is Black in color and is justified. Labels are printed in indelible ink on permanent adhesive backing or silk-screened onto the EUT or shall be affixed at a conspicuous location on the EUT. Where the EUT is constructed in two or more sections connected by wires and marketed together, the above statement is required to be affixed only to the main control unit. When the EUT is so small or for such use that it is not practicable to place the statement on it, the above information shall be placed in a prominent location in the instruction manual or pamphlet supplied to the user or, alternatively, shall be placed on the container in which the device is marketed. FCC Label Location

Report No: SSP26040156-1E FCC ID: 2BFQH-YD03 Annex of Test Report Annex B. EUT Internal Photos EUT Internal View 1 EUT Internal View 2 Report No: SSP26040156-1E FCC ID: 2BFQH-YD03 Annex of Test Report EUT Internal View 3 EUT Internal View 4 SMD ANT SMD ANT

FCC ID: 2BFQH-YD03 RF Exposure Evaluation According to KDB 447498 D01 General RF Exposure Guidance v06 and part 2.1093，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(s), listed below, is (are) satisfied. For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(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 Here, The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. For BR+EDR Max Conducted Power(dBm) Tune-up Power(dBm) Max Tune-up Power(dBm) Max Power(mW) Frequency(MHz) Min. distance(mm) Calc. thresholds limit 0.74 0(±1) 1 1.26 2402 5 0.3906 3.0 So a SAR test is not required

Report No: SSP26040156-1E FCC Test Report Page 1 of 51 FCC TEST REPORT FCC ID: 2BFQH-YD03 Report No. : SSP26040156-1E Applicant : Hangzhou banzi Trading Co., Ltd Product Name : Wireless Headset Model Name : YD03 Test Standard : FCC Part 15.247 Date of Issue : 2026-04-20 Shenzhen CCUT Quality Technology Co., Ltd. 1F, Building 35, Changxing Technology Industrial Park, Yutang Street, Guangming District, Shenzhen, Guangdong, China; (Tel.:+86-755-23406590 website: www.ccuttest.com) This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen CCUT Quality Technology Co., Ltd. Report No: SSP26040156-1E FCC Test Report Page 2 of 51 Test Report Basic Information Applicant..................................: Hangzhou banzi Trading Co., Ltd Address of Applicant...............: No. C071, Building 1, Agricultural Products Park, Youyi Village, Yangxi Street Jiande, China Manufacturer..........................: Hangzhou banzi Trading Co., Ltd Address of Manufacturer........: No. C071, Building 1, Agricultural Products Park, Youyi Village, Yangxi Street Jiande, China Product Name.........................: Wireless Headset Brand Name.............................: - Main Model..............................: YD03 Series Models..........................: - Test Standard..........................: FCC Part 15 Subpart C ANSI C63.4-2014 ANSI C͸͵.ͳͲ-2020 Date of Test .............................: 2026-03-27 to 2026-04-20 Test Result...............................: PASS Tested By ................................: (Tate Chen) Reviewed By............................: (Lorzix Luo) Authorized Signatory............: (Lahm Peng) Note : This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen CCUT Quality Technology Co., Ltd.. All test data presented in this test report is only applicable to presented test sample. Report No: SSP26040156-1E FCC Test Report Page 3 of 51 CONTENTS 1. General Information ....................................................................................................................................................5 1.1 Product Information .............................................................................................................................................5 1.2 Test Setup Information..........................................................................................................................................6 1.3 Compliance Standards ...........................................................................................................................................7 1.4 Test Facilities ........................................................................................................................................................7 1.5 List of Measurement Instruments ..........................................................................................................................8 1.6 Measurement Uncertainty .....................................................................................................................................9 2. Summary of Test Results ........................................................................................................................................... 10 3. Antenna Requirement ............................................................................................................................................... 11 3. 1 Standard and Limit.............................................................................................................................................. 11 3.2 Test Result .......................................................................................................................................................... 11 4. Conducted Emissions ................................................................................................................................................ 12 4.1 Standard and Limit.............................................................................................................................................. 12 4.2 Test Procedure.................................................................................................................................................... 12 4.3 Test Data and Results .......................................................................................................................................... 13 5. Radiated Emissions ................................................................................................................................................... 16 5.1 Standard and Limit.............................................................................................................................................. 16 5.2 Test Procedure.................................................................................................................................................... 16 5.3 Test Data and Results .......................................................................................................................................... 18 6. Band-edge Emissions(Radiated) ............................................................................................................................... 22 6.1 Standard and Limit.............................................................................................................................................. 22 6.2 Test Procedure.................................................................................................................................................... 22 6.3 Test Data and Results .......................................................................................................................................... 22 7. Frequency Hopping System ............................................…

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2.4GHz1608 Chip Antenna:RANT 1608 F245C04 _ Application: WLAN,802.11b/g,Bluetooth,WLAN, etc ... Features SMD,high reliability,ultra Impact,Omni-directional... Part numberInformation RANT1608F245C04 (A)(B)(C)(D)(E)(F) ElectricalSpecification Dimensionand TerminalConfiguration No.TerminalName 1Feeding/GNG 2GND/Feeding (A)ProductTypeChip Antenna (B) Size Code 1.6 x0.8 mm( ± 0. 1mm) (C) MaterialHigh K material (D) Frequency2.4 ~ 2.5GHz (E) FeedingmodePIFA& SingleFeeding (F) AntennatypeType=04 WorkingFrequencyRange2400~2500MHz Bandwidth120 MHz(Min.) PeakGain2.7 dBi (Typ.) Impedance50 Ohm Returnloss10 dB ( Min) PolarizationLinear AzimuthBeamwidthOmni-directional OperationTemperature( °C )-40 ~85 °C Resistanceto SolderingHeats 10sec.( @ 280 °C ) TerminationNi / Au (Leadless) Dimension(mm) L 1.60±0. 10 W 0.80 ± 0. 10 T 0. 80 ± 0. 10 咏成國際科技有限公司電話:13530576606 RAIN InternationalTechnologyCo., Ltd.TEL: 13530576606 2.4GHz1608 Chip Antenna:RANT 1608 F245C04 _ 1 EvaluationBoardReference PCB DimensionAntennaLayoutReference Unit :mm ElectricalCharacteristics ReturnLoss & Radiation ELECTRICALCHARACTERISTICSS11 Radiation ElectricalCharacteristics Freque ncy EfficPercenGain 2400-1.6472.27%2.38 2450-1.3375.34%2.7 2500-1.5972.98%2.59 2.4GHz1608 Chip Antenna:RANT 1608 F245C04 _ TapingSpecifications Reel and TapingSpecification Reel Specification TYPESIZEABCD 16087”4K/Reel 4.0±0.5 4.0 ±213.5 ±0.5178 ±2 TappingSpecification PackagingTypeABWEFGHTψDP PaperType1608 1.90±0.203.50±0.208.0±0.201.75±0.103.5±0.054.0±0.102.0±0.050.75±0.10 1.50±0.10 4.0±0.1 2.4GHz1608 Chip Antenna:RANT 1608 F245C04 _ ReliabilityTable Test ItemProcedure Requirements CeramicType Remark (Reference) Electrical Characterization Fulfillthe electrical specification UserSpec. Thermal Shock 1. Preconditioning: 50 ± 10°C/ 1 hr , then keepfor 24 ± 1 hrs at roomtemp. 2. Initialmeasure:Spec:refer Initialspec. 3. Rapidchangeof temperaturetest: -30°Cto +85°C; 100 cycles; 15 minutesat Lowercategorytemperature; 15 minutesat Uppercategorytemperature. No VisibleDamage. Fulfillthe electrical specification. MIL-STD-202 107 Temperature Cycling 1. Initialmeasure:Spec:refer Initialspec. 2. 100 Cycles(-30°Cto +85°C), SoakMode=1(2 Cycle/hours). 3. Measurementat 24 ± 2Hoursafter test condition. No VisibleDamage. Fulfillthe electrical specification. JESD22 JA104 High Temperature Exposure 1. Initialmeasure:Spec:refer Initialspec. 2. Unpowered;500hours@ T=+85°C. 3. Measurementat 24 ± 2 hoursafter test. No VisibleDamage. Fulfillthe electrical specification. MIL-STD-202 108 Low Temperature Storage 1. Initialmeasure:Spec:refer Initialspec. 2. Unpowered:500hours@ T= -30°C. 3. Measurementat 24 ± 2 hoursafter test. No VisibleDamage. Fulfillthe electrical specification. MIL-STD-202 108 Solderability (SMD BottomSide) Dippingmethod: a. Temperature:235 ±5°C b. Dippingtime:3 ±0.5s The soldershouldcover over 95% of the critical area of bottomside. IEC 60384-21/22 4.10 SolderingHeat Resistance (RSH) Preheatingtemperature:150 ± 10 °C. Preheatingtime:1~2 min. Soldertemperature:260 ± 5°C. Dippingtime:5 ± 0.5s No VisibleDamage.IEC 60384-21/22 4.10 Vibration5g's for 20 min.,12 cycleseachof 3 orientations Note:Use 8"X5"PCB .031"thick 7 securepointson, one long side and 2 securepointsat cornersof oppositesides.Parts mountedwithin2" from any securepoint.Test from 10-2000 Hz. No VisibleDamage.MIL-STD-202 Method204 Mechanical Shock Threeshocksin eachdirectionshall be appliedalongthe three mutuallyperpendicularaxesof the test specimen(18 shocks) Peakvalue:1,500g’s Duration:0.5ms Velocitychange:15.4 ft/s Waveform:Half-sine No VisibleDamage.MIL-STD-202 Method213 Humidity Bias 1. Humidity:85% R.H.,Temperature:85 ± 2 °C. 2. Time:500 ± 24 hours. 3. Measurementat 24 ± 2hrs after test condition. No VisibleDamage. Fulfillthe electrical specification. MIL-STD-202 Method106 2.4GHz 3216 Chip Antenna: RANT1608F245C03 _ Board Flex (SMD) 1. Mounting method: IR-Reflow. PCB Size (L:100 × W:40 × T:1.6mm) 2. Apply the load in direction of the arrow until bending reaches 2 mm. No Visible Damage.AEC-Q200 005 AdhesionForce of 1.8Kg for 60 seconds.No Visible Damage Magnification of 20X or greater may be employed for inspection of the mechanical integrity of the device body terminals and body/terminal junction. AEC-Q200 006 Physical Dimension Any applicable method using x10 magnification, micrometers, calipers, gauges, contour projectors, or other measuring equipment, capable of determining the actual specimen dimensions. In accordance with specification. JESD22 JB100 Revision History RevisionDateContent 12019/03/01New Datasheet 22020/02/22Add 2D radiation characteristic

Report No: SSP26040156-1E FCC ID: 2BFQH-YD03 Annex of Test Report Annex C. Test Photos Conducted Emission Test View 1 Report No: SSP26040156-1E FCC ID: 2BFQH-YD03 Annex of Test Report Radiated Emission Test View Below 1GHz Report No: SSP26040156-1E FCC ID: 2BFQH-YD03 Annex of Test Report Radiated Emission Test View Above 1GHz