2A6I4-S25Bluetooth headsets

USER MANUAL 1. How to wear correctly:【as shown in the following figure】 2.Instructions for using in swimming 1) Before swimming: (1)Switch the earphone to MP3 mode and replace the original eartips to suitable exclusive swimming earplug (2) Correctly put the earphone on your ears，L on the left ear, and R on the right ear. (3) Then put on your swimming cap, and put the neckband of the earphone inside the swimming cap in case the earphones to avoid the headphones from dropping to the pool when swimming. 2)Cautions (1) Droplets of water may attach to the eartips or the outlet of the earphone which may lead to unbalanced sound volume from the left and right.If it happens,shake off the water before you wear the headphone again. (2) The charging cable is not waterproof,please keep it away from water. (3) Salty water may lead to damage of the earphones. Please avoid using this earphones when swimming in sea. (4)Bluetooth signal will be blocked under water. So when swimming, this earphones could not connect to your smart phone, please switch to MP3 mode. (5) Do not use this earphone in areas where surrounding sound cannot be heard, in which danger may occur. (6) When using this earphone, please comply with the relevant regulations of the local swimming facility. (7) This earphone can prevent fresh water, pool water, tap water, and sweat. Not waterproof to liquids other than the above. (8) When you feel the sound dull,please clear the water in your ear and eartips, since water in your ear or in the eartips may lead to dull sound of the earphones, (9) Please mind the volume do not turn it too loud,which may hurt your hearing ability. (10) After using the earphone in water,please use a towel to get rid of the water or dry it in a ventilated place. 3.Instruction 4. Charging and transfer music files 1)Plug the dedicated charging cable to your computer; 2) Connect the contacts on the back of the headphones to the charging base. When connected correctly,the earphone begins to charge and you can copy audio files to earphone. 3) Always keep the contacts clean to prevent avoid poor contact and file transfer failures. 5.How to operate 1) Power on:Press and hold the MFB for 2 seconds 2) Pairing: When enter pairing mode(lights will flash red and blue), select this device name to complete pairing. After paired,the blue light flashes every 4-5 seconds; Multi-point connection: If you need to connect 2 devices with the earphone, shut off the BT function on the first device , then connect the earphone with the second device and then open the BT function on your first device. 3)Wireless Mode/MP3 Mode switching:Press the“+”and“_”at the same time. 4) Power off: Press the MFB for 3 seconds 5)Volume up/Volume down: Tap the volume up/volume down key 6) Previous and Next Song: Long press the volume down to go back to the previous song,and long press the volume up to skip to next song. 7) Pause/play music/answer a call: Tap the MFB once. 8) Under MP3 playback mode, double tap the Volume down button to switch between single loop sequential playback and list loop. 9) Random playback:Tap the volume+twice 6.Specifications: Wireless Version: Wireless5.2 Support Profile:A2DP v1.3,AVRCPv1.5HFPv1.6HSP v1.2 Working Frequency:20HZ-20KHZ Speaker Diameter: 11 mm Speaker Impedance: 32 ohm Speaker Power:7mW Battery: Polymer Lithium Battery180mAH Music playback Time: 8-9 hours Talking Time: 9-10 hours Standby Time: 150 hours Charging Time: 2 hours Charging Method: Magnetic contacts charging Wireless Transmission Distance10-15m(free space) Microphone: Built-in Microphone Microphone Sensitivity:-38 dB Headphone Type: In-ear Power Display: IOS device Main Material:PC/ABS Weight:32g Dimension(L*W*H):70mm*55mm*28mm Built-in Memory card:8GB Waterproof Rating:IPX8 7.Package List 1x Sport Wireless Earphones 1xUSB Magnetic Charging Cable 1xUser Manual 3x Normal Ear Caps (3 sizes) 3x Waterproof Swimming Earplugs(3 sizes) 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. 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 NOTE: This device and its antenna(s) must not be co-located or operation in conjunction with any other antenna or transmitter The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Shenzhen Corsran Technology Co.,Ltd. 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – EquipmentType Company name: Shenzhen Corsran Technology Co.,Ltd. Address: Room 205, Buliding F, NO.148, Linagxia Road, Fenghuang, Fuyong, Bao'An District, Shenzhen, Gauangdong, China Product Name: Bluetooth headsets FCCID: 2A6I4-S25 Model(s): S25 2.911(d)(5)(i) EquipmentType We, [Shenzhen Corsran Technology Co.,Ltd.] (“the applicant”) certify that the equipment for which authorization is sought through certification is not:  Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules.  Identified as an equipment type in the “Covered List” NOTE 1 Yours sincerely, Name: Jane Zhang Date: Aug. 17, 2023 Title: Manager Company name: Shenzhen Corsran Technology Co.,Ltd. Signature: NOTE 1 “Covered List ”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Shenzhen Corsran Technology Co.,Ltd. 2.911 (d)(5)(ii) Applicant Attestation v1.3 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: Shenzhen Corsran Technology Co.,Ltd. Address: Room 205, Buliding F, NO.148, Linagxia Road, Fenghuang, Fuyong, Bao'An District, Shenzhen, Gauangdong, China Product Name: Bluetooth headsets FCCID: 2A6I4-S25 Model(s): S25 2.911(d)(5)(ii) Applicant filing We, [Shenzhen Corsran Technology Co.,Ltd.] (“the applicant”) certify that, as of the date of the filing of the application, the applicant is not identified NOTE 1 on the “Covered List” NOTE 2 , established pursuant to §1.50002 of this chapter, as an entity producing covered communications equipment. Yours sincerely, Name: Jane Zhang Date: Aug. 17, 2023 Title: Manager Company name: Shenzhen Corsran Technology Co.,Ltd. Signature: NOTE 1 Delete option not applicable to this application. NOTE 2 “Covered List ”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Shenzhen Corsran Technology Co.,Ltd. Agent Authorization Company: Shenzhen Corsran Technology Co.,Ltd. Address: Room 205, Buliding F, NO.148, Linagxia Road, Fenghuang, Fuyong, Bao'An District, Shenzhen, Gauangdong, China Product Name: Bluetooth headsets Model Number(s): S25 Product Description: Bluetooth headsets We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required 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. Signature: Date: Aug. 17, 2023 Name: Jane Zhang Title: Manager Company: Shenzhen Corsran Technology Co.,Ltd.

Shenzhen Corsran Technology Co.,Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Aug. 17, 2023 Subject; Request for Confidentiality FCC ID: 2A6I4-S25 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 pursuantto 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: Jane Zhang Title: Manager

Annex A External Photos Report No.: HK2308083586-E Page 1 of 4 Report No.: HK2308083586-E Page 2 of 4 Report No.: HK2308083586-E Page 3 of 4 Report No.: HK2308083586-E Page 4 of 4

FCC ID LABEL: Ca. 20mm x 10mm label location FCC ID: 2A6I4‐S25

Annex B Internal Photo Report No.: HK2308083586-E Page 1 of 3 Report No.: HK2308083586-E Page 2 of 3 Antenna Report No.: HK2308083586-E Page 3 of 3

FCC RF Exposure EUT Description: Bluetooth headsets Model No.: S25 FCC ID: 2A6I4-S25 1. Limits According to KDB 447498 D01 General RF Exposure Guidance v01 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: Result=P/D*√F F= the RF channel transmit frequency in GHz P=Maximum turn‐up power in mw D=Min. test separation distance in mm 2. Test Result of RF Exposure Evaluation Output power (dBm) Tune Up Power (dBm) Max Tune Up power dBm/mW Min test separati on distance mm Result Limit SAR Test Exclusion 2402 4.34 3.5±1(4.5)2.82 5 0.87361 3.0 Pass Note: PK Output power= conducted power. Conducted power see the test report HK2308083586-E, antenna gain=2.73dBi Per KDB 447498 D01, when the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. The test exclusion threshold is 0. 87361 which is<= 3, SAR testing is not required. Note: Exclusion Thresholds Results=[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f (GHz)] f(GHz) is the RF channel transmit frequency in GHz Distance=5mm

UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± SCALE：N/AUNIT：mm 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:单级蓝牙天线 客户型号: CUSTOMERPARTNo: 产品型号: OURMODELNO:ZXL3216DA01 日期: DATE:2020/12/22 确认签字,盖章后请返回承认书一份 PLEASERETRUVTOUSONECOPYOF“SPECIFICATIONFORAPPROVAL” WITYYOURAPPROVEDSIGNATURES 核准审核王杰制作 客户承认签印 日期 UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± SCALE：N/AUNIT：mm DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-3216Specification DOCUMENT NO. 3216 SPECREV. P1 ZXL3216DA01Specification 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±0.2 1.6±0.2 0.52±0.1 0.4 ± 0.1 CH IP45 032 2 16 UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± SCALE：N/AUNIT：mm DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-3216Specification DOCUMENT NO. 3216 SPECREV. P1 测试板参考尺寸： 单位：mm UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± SCALE：N/AUNIT：mm DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-3216Specification DOCUMENT NO. 3216 SPECREV. P1 APPLICATIONGUIDE 5.SPECIFICATIONS: No.ProductnumberZXL3216DA01 1CentralFrequency2440MHz 2Bandwidth100(Min.)MHz 3ReturnLoss-11.96(Max.)dB 4PeakGain2.73dBi 5Impedance50Ω 6Operating Temperature -40~+85 °C 7MaximumPower5W 8Resistanceto solderingheat 10(@260°C) Sec. 9PolarizationLinear 10AzimuthBeamwidthOmni-directional 11TerminationSn(leadless) UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± SCALE：N/AUNIT：mm DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-3216Specification DOCUMENT NO. 3216 SPECREV. P1 6.ElectricalCharacteristics: UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± SCALE：N/AUNIT：mm DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-3216Specification DOCUMENT NO. 3216 SPECREV. P1 X-YPlane X-YPlane X-YPlane UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± SCALE：N/AUNIT：mm DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-3216Specification DOCUMENT NO. 3216 SPECREV. P1 3DRadiationPattern UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± SCALE：N/AUNIT：mm 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 . UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± SCALE：N/AUNIT：mm 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 UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± SCALE：N/AUNIT：mm DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-3216Specification DOCUMENT NO. 3216 SPECREV. P1 Notethatexcessofsolderingvolumewilleasilygetcrackthebodyofthisproduct. 9.TapingPackageandLabelMarking: (unit:mm) (1)Quantity/Reel:5000pcs/Reel (2)Carriertapedimensions (3)Tapingreeldimensions

Page 1 of 48 Report No.: HK2308083586-E FCC Test Report FCC PART 15 SUBPART C 15.247 Test report On Behalf of Shenzhen Corsran Technology Co.,Ltd. For Bluetooth headsets Model No.: S25 FCC ID: 2A6I4-S25 Prepared For : Shenzhen Corsran Technology Co.,Ltd. Room 205, Buliding F, NO.148, Linagxia Road, Fenghuang, Fuyong, Bao'An District, Shenzhen, Gauangdong, China Prepared By : Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: Aug. 08, 2023 ~ Aug. 16, 2023 Date of Report: Aug. 16, 2023 Report Number: HK2308083586-E Page 2 of 48 Report No.: HK2308083586-E Test Result Certification Applicant’s Name .................. : Shenzhen Corsran Technology Co.,Ltd. Address .................................. : Room 205, Buliding F, NO.148, Linagxia Road, Fenghuang, Fuyong, Bao'An District, Shenzhen, Gauangdong, China Manufacture's Name ............. : Shenzhen Corsran Technology Co.,Ltd. Address .................................. : Room 205, Buliding F, NO.148, Linagxia Road, Fenghuang, Fuyong, Bao'An District, Shenzhen, Gauangdong, China Product Description Trade Mark ............................. : Product Name ........................... : Bluetooth headsets Model and/or type reference...: S25 Standards .............................. : 47 CFR FCC Part 15 Subpart C 15.247 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK 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. Date of Test .................................... . Date (s) of Performance of Tests .... . Aug. 08, 2023 ~ Aug. 16, 2023 Date of Issue .................................... Aug. 16, 2023 Test Result ........................................ Pass Prepared by: Project Engineer Reviewed by: Project Supervisor Approved by: Technical Director Page 3 of 48 Report No.: HK2308083586-E Table of Contents Page 1. Summary .............................................................................................................................................................. 5 1.1. Test Standards ......................................................................................................................................................... 5 1.2. Test Description ....................................................................................................................................................... 5 1.3. Information of the Test Laboratory ......................................................................................................................... 6 1.4. Statement of the Measurement Uncertainty .......................................................................................................... 6 2. General Information ............................................................................................................................................. 7 2.1. Environmental Conditions ....................................................................................................................................... 7 2.2. General Description of EUT ..................................................................................................................................... 7 2.3. Description of Test Modes and Test Frequency ....................................................................................................... 8 2.4. Equipments Used during the Test ............................................................................................................................ 9 2.5. Related Submittal(s) / Grant (s) ............................................................................................................................. 10 2.6. Modifications ........................................................................................................................................................ 10 2.7. Description of Test Setup ....................................................................................................................................... 10 2.8. Description of support units .................................................................................................................................. 11 3. Test Conditions and Results ................................................................................................................................. 12 3.1. Conducted Emissions Test ..................................................................................................................................... 12 3.2. Radiated Emissions and Band Edge ....................................................................................................................... 15 3.3. Maximum Peak Conducted Output Power ............................................................................................................ 26 3.4. 20dB Bandwidth .................................................................................................................................................... 27 3.5. Frequency Separation ........................................................................................................................................... 30 3.6. Number of Hopping Frequency ............................................................................................................................. 32 3.7. Time of Occupancy (Dwell Time) .......................................................................................................................... 34 3.8. Out‐of‐Band Emissions ..............................................................................…

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Model: S25 Radiated Emission Conducted Emissions