2BB97-PRO4Pro4

Project FunctionOperationLED Display Method Sound PromptRemarks 1 Power on Long press the power button for 1.5s or charge in the warehouse The red light remains on for a long timeVoice Announcements 2 Shutdown Press and hold the power button for 3 seconds when turned on (or put it into the charging compartment) The red light flashes three timesVoice Announcements 3 Pairing method Automatic pairing upon startup/Long press 5S to enter pairing Alternating flashing of red and blue lightsVoice Announcements 4 Successfully paired phone with any earphone (single ear) Successfully paired headphones with phonenothingVoice Announcements 5 Successfully disconnected the phone from any earphone (single ear) Headphone disconnected from phoneAlternating flashing of red and blue lightsVoice Announcements 6 Pairing of left and right earphonesLeft and right ear pairing successful The main ear red and blue lights flash alternately, while the auxiliary ear lights do not flash Voice Announcements 7 Connect the paired headphones to the phone Successfully paired headphones with phoneNone (opposite ear) The main ear broadcasts, and the auxiliary ear has no prompt sound 8 Disconnect the paired headphones from the phone Headphone disconnected from phone The main ear red and blue lights flash alternately, while the auxiliary ear lights do not flash The main ear broadcasts, and the auxiliary ear has no prompt sound 9 Seamless switching Switching off any earphone does not affect the normal operation of the other earphone nothingVoice Announcements 10 Play Pauseclicknothingnothing 11 Cut Song Three strikes, one song above the main ear, one song below the auxiliary ear nothingDrip sound 12 Modulation Long press the main ear volume - auxiliary ear volume+ nothingMaximum prompt tone - Tone 13 Incoming callCaller ID functionnothingOld telephone ringtones 14 Hang up the phoneclicknothingnothing 15 Reject incoming callsDouble click to wake up SIRInothingnothing 16 Voice controlDouble click to wake up SIRInothing Apple comes with music (maximum prompt sound) 17 Low battery warning tone Alarm for low power when the voltage is lower than 3.3V nothingLow beep, low beep, low beep 18 Low power shutdownShutdown when the voltage is below 3.1VnothingPowerOff 19 ChargingPut it into the charging compartmentRed light always onnothing 20 Charging completedCharging during charging After the blue light remains on for 30 seconds, turn off the light nothing 21 Automatic shutdown Automatically shut down after 2 minutes of not connecting The red light flashes three timesPowerOff 22 Auto sleepEntering sleep for 30 seconds when not workingnothing Model： PrO4Date：2023.05.10 Paired rear flashing light as the main ear User Manual Support seamless switching Apple earphone volume synchronization function Support for iPhone volume synchronization Supports fast pairing and testing 1 Bluetooth name cannot exceed 28 characters 2 Quick pairing and quick reconnection Connect two phone functions Support wireless upgrade to change search name (support empty chip upgrade) Can be upgraded with a computer Synchronous shutdown Take care Increase the stability detection value of the charging compartment 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: 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: The Grantee is not responsible for any changes or modifications not expressly approved by the party responsible for compliance. such modifications could void the user's authority to operate the equipment. The device has been evaluated to meet general RF exposure requirement. This equipment complies with FCC's RF radiation exposure limits set forth for an uncontrolled environment. This device and its antenna(s) must not be co-located or conjunction with any other antenna or transmitter. Special functions low power consumption switch Power display function

Jiangmen Guixia Trade Co., Ltd Address：104, No. 18, Tongde 3rd Road, Huicheng, Xinhui District, Jiangmen City Date: 2023-08-11 Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements Part 2.911(d)(7) Filing SUBJECT: FCC Application for FCC ID: 2BB97-PRO4 Jiangmen Guixia Trade Co., Ltd certifies that, as of the date of the filing of the application, GSS SERVICE INC is our designated U.S. agent for service of process for the above referenced FCC ID. Jiangmen Guixia Trade Co., Ltd accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. GSS SERVICE INC accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information: Name: GSS SERVICE INC Address: 6547 N Academy Blvd #226 Colorado Colorado United States FRN ：0033402082 Contact Person: Michoux Logan Tel.: 001-949-2990192 Email: [email protected] Sincerely, Signed on behalf of Jiangmen Guixia Trade Co., Ltd Signed on behalf of GSS SERVICE INC Name: Huijuan Liang Name: Michoux Logan Title: Manager Title: Manager Date: 2023-08-11 Date: 2023-08-11

Jiangmen Guixia Trade Co., Ltd Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Aug 11, 2023 FCC ID: 2BB97-PRO4 Ref. #1: Attestation Statements Part 2.911(d)(5)(i) Filing Jiangmen Guixia Trade Co., Ltd 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. Ref. #2: Attestation Statements Part 2.911(d)(5)(ii) Filing Jiangmen Guixia Trade Co., Ltd certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Applicant: Jiangmen Guixia Trade Co., Ltd Address: 104, No. 18, Tongde 3rd Road, Huicheng, Xinhui District, Jiangmen City Contact Person: Huijuan Liang Tel.: +86 13750311740 Email: [email protected] Sincerely, Signature:

UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-3216Specification DOCUMENT NO. 3216 SPECREV. P1 产品规格承认书 SPECIFICATIONS 客户: CUSTOMER: 产品名称: DESCRIPTION:蓝牙天线 客户型号: CUSTOMERPARTNo: 产品型号: OURMODELNO:PBX3216MP01 日期: DATE:2020/12/22 确认签字,盖章后请返回承认书一份 PLEASERETURNTOUSONECOPYOF“SPECIFICATIONFORAPPROVAL” WITHYOURAPPROVEDSIGNATURES 审核刘飞制作刘小美 Bluetooth ANT Prepared by Reviewed by Room 1016, Mintai Building, Minzhi Avenue, Minzhi Street, Longhua New District, Shenzhen Shenzhen pengban Xingye Technology Co., Ltd Shenzhen pengban Xingye Technology Co., Ltd UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-3216Specification DOCUMENT NO. 3216 SPECREV. P1 PBX3216MP01Specification OperatingTemp.:-40°C~+85°C 1. FEATURES : ●Lightweight,compact ●Widebandwidth,lowcost ●Built-inantennawithhighgain 2. APPLICATIONS : ●Bluetooth,WirelessLAN,MobileTV ●HomeRFSystem,etc 3.PRODUCTIDENTIFICATION (1)(2)(3) (1)Producttype:MultilayerchipAntenna (2)CenterFrequency:2450MHz (3)ExternalDimensions(L×W)(mm):3.2*1.6 4.SHAPEANDDIMENSIONS: LWHA 3.2±0.21.6±0.2 0.52 ± 0.10.4 ± 0.1 CH IP45 032 2 16 Shenzhen pengban Xingye Technology Co., Ltd UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-3216Specification DOCUMENT NO. 3216 SPECREV. P1 ： Shenzhen pengban Xingye Technology Co., Ltd Size(mm) Top PAD ANT Bottom UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-3216Specification DOCUMENT NO. 3216 SPECREV. P1 APPLICATIONGUIDE 5.SPECIFICATIONS: *Testcondition:Testboardsize90*40mm Matchingcircuit:Pimatchingcircuitwillberequired Shenzhen pengban Xingye Technology Co., Ltd Top PAD ANT Bottom Punching reference diagram Punching Test items Bandwidth Polarization Efficiency Impedance Max. gain Specifications linear polarization UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-3216Specification DOCUMENT NO. 3216 SPECREV. P1 6.ElectricalCharacteristics: MarkFrequencyVSWR 12400MHz1.513 22440MHz1.068 32480MHz1.464 Shenzhen pengban Xingye Technology Co., Ltd VSWR Loss UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-3216Specification DOCUMENT NO. 3216 SPECREV. P1 RadiationPattern TheGainpatternismeasuredinFAR-fieldchamber.DUTisplacedonthetableofrotator,a standardhornantennaandVectorNetworkAnalyzerisusedtocollectdata. Shenzhen pengban Xingye Technology Co., Ltd UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-3216Specification DOCUMENT NO. 3216 SPECREV. P1 ◎3DGainPattern(2400MHz) ◎3DGainPattern(2440MHz) ◎3DGainPattern(2480MHz) Shenzhen pengban Xingye Technology Co., Ltd UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-3216Specification DOCUMENT NO. 3216 SPECREV. P1 7.EnvironmentalCharacteristics (1)ReliabilityTest (2)StorageCondition (a)Atwarehouse: Thetemperatureshouldbewithin0~30°Candhumidityshouldbelessthan60%RH. Theproductshouldbeusedwithin1yearfromthetimeofdelivery. (b)Onboard: Thetemperatureshouldbewithin-40~85°Candhumidityshouldbelessthan85%RH. (3)OperatingTemperatureRange Operatingtemperaturerange:-40 °C to+105 °C . Shenzhen pengban Xingye Technology Co., Ltd UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-3216Specification DOCUMENT NO. 3216 SPECREV. P1 8.RecommendedReflowSoldering (1)SolderingGunProcedure Notethefollows,incaseofusingsoldergunforreplacement. (a)Thetiptemperaturemustbelessthan350 ° Cfortheperiodwithin3secondsby usingsolderinggununder30W. (b)Thesolderingguntipshallnottouchthisproductdirectly. (2)SolderingVolume Notethatexcessofsolderingvolumewilleasilygetcrackthebodyof…

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Jiangmen Guixia Trade Co., Ltd Date：Aug 11, 2023 Product Model Number: Pro4 FCC ID：2BB97-PRO4 To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following: Testing Approval applications and procedures We declare that ORGANIZATION. is allowed to forward all information related to the approval project to the applied certification body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out by ORGANIZATION. on our behalf shall have the same effect as acts of our own. By: Contact Listed on FCC Wesbite Title: Manager Email: [email protected] Telephone: +86 13750311740 On behalf of: Jiangmen Guixia Trade Co., Ltd

Jiangmen Guixia Trade Co., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: August 11, 2023 Subject; Request for Confidentiality FCC ID: 2BB97-PRO4 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 Software Security Requirements for UNII devices 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: Huijuan Liang Title: Manager

Jiangmen Guixia Trade Co., Ltd Pro4_Model Difference Product description: Pro4 Model name: Pro4, F9, i12, i13, inpods3, pro200, kj-8, kj-9, kj10,kj12, kj18, pro100, pro300, pro500, pro2, pro4, pro6, pro 8, pro12, pro18, pro19, Air15 Pro, tws-6, J09, J10, J11, J12, J18, Air11pro, Air12pro, Air13Pro, J15, M10, Y50, Y30, T500, Y68, A6s, E6s FCC ID: 2BB97-PRO4 All the model are of the same circuit and RF module, and the only difference are brand and packaging. The model RD36 is the tested sample. Regards Sincerely Client’s signature: Client’s name / title: Huijuan Liang / Manager Contact information / address: Jiangmen Guixia Trade Co., Ltd 104, No. 18, Tongde 3rd Road, Huicheng, Xinhui District, Jiangmen City

FCC ID: 2BB97-PRO4 EUT PHOTOS(External Photos) FCC ID: 2BB97-PRO4 FCC ID: 2BB97-PRO4 FCC ID: 2BB97-PRO4 FCC ID: 2BB97-PRO4 ※※※※※ END OF REPORT ※※※※※

Size：20mm*2.5mm FCC ID:2BB97–PRO4

FCC ID: 2BB97-PRO4 EUT PHOTO(Internal Photos) FCC ID: 2BB97-PRO4 FCC ID: 2BB97-PRO4 ANT FCC ID: 2BB97-PRO4 FCC ID: 2BB97-PRO4 ※※※※※ END OF REPORT ※※※※※

FCC ID: 2BB97-PRO4 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, For Bluetooth Mode Max Power (dBm) Tune-up power (dBm) Max Power (mW) Frequency(MHz) Min. Distance (mm) Calc. thresholds limit BR/EDR 8.61 8±1 9 2480 5 2.46 3.0 Antenna gain: 2.67dBi So a SAR test is not required

FCC ID: 2BB97-PRO4 EUT TEST PHOTOS The internal structure of the left and right wireless headphone is the same, and the testing is based on the right wireless headphone. FCC ID: 2BB97-PRO4 ※※※※※ END OF REPORT ※※※※※