2A3YG-510152SKYN Heat Vibes

510152 User Manual How to working: How to charge it: FCC Warning: 1. This device should be installed and operated with minimum distance 0cm between the radiator&your body. 2. 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. 3. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 4. 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.

Suretex Limited Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 12/10/2023 U.S. Agent Designation Suretex Limited 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: 2A3YG-510152): Name and company of U.S. agent: USA MEIHUA TRADING INC Physical U.S. address of agent: 5379 Pine Valley Ct Boulder CO 80301 United States FRN of U.S. agent: 0033406166 Email address of U.S. agent: [email protected] USA MEIHUA TRADING INC acknowledges their obligation to accept service of process on behalf of Suretex Limited Suretex Limited with the FRN 0031739758 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 [Name] Tonys Shi [Title] Manager [Company] Suretex Limited Signature [Name of U.S. agent] Harley Quinn [Title of U.S. agent] Manager [Company of U.S. agent] USA MEIHUA TRADING INC 48_[model] US_Agent_2.911(d)(7) - U, V05

Sincerely, Name/Title： Tonys Shi/Manager Company: Suretex Limited Address: 193/68 Lake Rajada Office Complex,17th Floor Ratchadapisek Road Klongtoey Thailand Phone: 86-13249469666 Fax: 86-13249469666 E-Mail: [email protected]

SKYNHeatVibes FCCID:2A3YG-510152 510152ExternalPhotographs

LabelandLabelLocation FCCID:2A3YG-510152

SKYNHeatVibes FCCID:2A3YG-510152 510152InternalPhotographs

RF Exposure Requirements 1.1 Product Description for Equipment Under Test (EUT) Client Information Applicant: Suretex Limited Address of applicant: 193/68 Lake Rajada Office Complex,17th Floor, Ratchadapisek Road,Klongtoey,Thailand 10110 Manufacturer: SHENZHEN SHAKI INDUSTRIAL CO.,LTD Address of manufacturer: 1/F,Block #5,Hua Feng Industry Park,Datianyang, Dongfang,SonggangTown,Bao'An District,Shen Zhen,China General Description of EUT Product Name: SKYN Heat Vibes Trade Name: / Model No.: 510152 Adding Model(s): / Rated Voltage: DC 3.7V from Battery Power Adapter Model: / Serial number: S-001 FCC ID: 2A3YG-510152 Technical Characteristics of EUT Bluetooth Version: BLE Frequency Range: 2402-2480MHz RF Output Power: -3.82dBm Data Rate: 1Mbps Modulation: GFSK Quantity of Channels: 40 Channel Separation: 2MHz Type of Antenna: PCB Antenna Gain: 2.58dBi 1.2 Standard Applicable According to §1.1307(b)(1) and KDB 447498 D01 General RF Exposure Guidance v06, the following RF exposure evaluation shall to demonstrate RF exposure compliance. [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 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 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 according to 4.1 f) is applied to determine SAR test exclusion. 1.3 Calculation Method Bluetooth Tx frequency range: 2402~2480MHz Min. test separation distance: 5mm Maximum Tune-up Conducted Output Power: -3dBm RF channel transmit frequency: 2402MHz Result: 0.1554 Limit: 3.0 So the transmitter complies with the RF exposure requirements and the SAR is not required.

1. AntennaDescribe Antennaspecification AntennaplatePCB antenna ModelNamePCB01 AntennaGain2.58 (Peakgain) FrequencyRang2402-2480MHz CompanyNameSHENZHENSHAKIINDUSTRIALCO.,LTD Address:1/F,Block#5,HuaFengIndustryPark,Datianyang, Dongfang,SonggangTown,Bao'AnDistrict,Shen Zhen,China Size:34m m length

WaltekTestingGroup(Shenzhen)Co.,Ltd. Http://www.waltek.com.cnPage 1 of 37 TESTREPORT ReferenceNo.......................:WTX23X12018262W001 FCCID....................................:2A3YG-510152 Applicant ...............................: SuretexLimited Address.................................: 193/68LakeRajadaOfficeComplex,17thFloor,Ratchadapisek Road,Klongtoey,Thailand10110 ProductName......................:SKYNHeatVibes TestModel. ............................: 510152 Standards..............................:FCCPart15.247 DateofReceiptsample.....:November23,2023 DateofTest ...........................: November23~December3,2023 DateofIssue........................:December3,2023 TestResult............................:Pass Remarks: Theresultsshowninthistestreportreferonlytothesample(s)tested,thistestreportcannotbe reproduced,exceptinfull,withoutpriorwrittenpermissionofthecompany.Thereportwouldbeinvalidwithout specificstampoftestinstituteandthesignaturesofcompilerandapprover. PreparedBy: WaltekTestingGroup(Shenzhen)Co.,Ltd. Address:1/F.,Room101,Building1,HongweiIndustrialPark,Liuxian2ndRoad, Block70Bao'anDistrict,Shenzhen,Guangdong,China Testedby:Approved&AuthorizedBy: JackHuangSilinChen ReferenceNo.:WTX23X12018262W001 WaltekTestingGroup(Shenzhen)Co.,Ltd. Http://www.waltek.com.cnPage 2 of 37 TABLEOFCONTENTS 1.GENERALINFORMATION.......................................................................................................................................4 1.1PRODUCTDESCRIPTIONFOREQUIPMENTUNDERTEST(EUT).................................................................................4 1.2TESTSTANDARDS.......................................................................................................................................................5 1.3TESTMETHODOLOGY.................................................................................................................................................5 1.4TESTFACILITY...........................................................................................................................................................5 1.5EUTSETUPANDTESTMODE....................................................................................................................................6 1.6MEASUREMENTUNCERTAINTY..................................................................................................................................6 1.7TESTEQUIPMENTLISTANDDETAILS........................................................................................................................7 2.SUMMARYOFTESTRESULTS...............................................................................................................................9 3.ANTENNAREQUIREMENT....................................................................................................................................10 3.1STANDARDAPPLICABLE...........................................................................................................................................10 3.2EVALUATIONINFORMATION....................................................................................................................................10 4.POWERSPECTRALDENSITY................................................................................................................................11 4.1STANDARDAPPLICABLE...........................................................................................................................................11 4.2TESTSETUPBLOCKDIAGRAM.................................................................................................................................11 4.3TESTPROCEDURE.....................................................................................................................................................11 4.4SUMMARYOFTESTRESULTS/PLOTS.......................................................................................................................11 5.DTSBANDWIDTH.....................................................................................................................................................12 5.1STANDARDAPPLICABLE...........................................................................................................................................12 5.2TESTSETUPBLOCKDIAGRAM.................................................................................................................................12 5.3TESTPROCEDURE.....................................................................................................................................................12 5.3SUMMARYOFTESTRESULTS/PLOTS.......................................................................................................................12 6.RFOUTPUTPOWER.................................................................................................................................................13 6.1STANDARDAPPLICABLE...........................................................................................................................................13 6.2TESTSETUPBLOCKDIAGRAM.................................................................................................................................13 6.3TESTPROCEDURE.....................................................................................................................................................13 6.4SUMMARYOFTESTRESULTS/PLOTS.......................................................................................................................13 7.FIELDSTRENGTHOFSPURIOUSEMISSIONS.................................................................................................14 7.1STANDARDAPPLICABLE...........................................................................................................................................14 7.2TESTPROCEDURE.................................................................................…

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SKYNHeatVibes FCCID:2A3YG-510152 510152TestSetupPhotos Radiatedemission30MHz~1GHz Radiatedemissionabove1GHz Conductedemission