2BCIE-HX05smart watch

HX05 HC HX05 HX05 HX05 HX05 HX05

(Shenzhen Fire Core lntelligent Equipment Co.,Ltd.) (August 31, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: 2BCIE-HX05) [Shenzhen Fire Core lntelligent Equipment 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. Sincerely, (Applicant signature) (Applicant printed name) Zhu Man (Shenzhen Fire Core lntelligent Equipment Co.,Ltd.) (August 31, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID: 2BCIE-HX05) [Shenzhen Fire Core lntelligent Equipment 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 an entity producing “covered” equipment. Sincerely, (Applicant signature) (Applicant printed name) Zhu Man

Shenzhen Fire Core lntelligent Equipment Co.,Ltd. Model Difference Data：August 31, 2023 Product description: smart watch Model name: HX05, HX02, HX03, HX04, GF03, GF07, GF09, HX8, HX09, HX10, HX12, HX04W, HX001, HX6, HX7, HX13, HX15, HX16, HX18, HX20 Trade Name: N/A FCC ID: 2BCIE-HX05 All the model are the same circuit and RF module, except model names . Regards Sincerely Client’s signature : Client’s name / title : Zhu Man（FINANCE） Contact information / address：901, Building d, Zhishang Science and Technology Park, Mashantou Community, Matian Street, Guangming District, Shenzhen

Shenzhen Fire Core lntelligent Equipment Co.,Ltd. (August 31, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (smart watch / HX05, HX02, HX03, HX04, GF03, GF07, GF09, HX8, HX09, HX10, HX12, HX04W, HX001, HX6, HX7, HX13, HX15, HX16, HX18, HX20 / FCC ID: 2BCIE-HX05 ) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☒ Internal Photos ☐ NOTE 1 ☒ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No required to be submitted with this application be permanently withheld from public review. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. Please contact me if there is any information you may need. Sincerely, Signature: Name: Zhu Man Title: FINANCE

Shenzhen Fire Core lntelligent Equipment Co.,Ltd. (August 31, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Shenzhen CTB Testing Technology Co., Ltd.) 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). This agreement expires one year from the current date. Sincerely, Signature: Name: Zhu Man Title: FINANCE

External Photos

FCC ID LABEL: Label Location: FCC ID: 2BCIE-HX05 Model No.: HX05

Internal Photos ANT

Shenzhen CTB Testing Co., Ltd. FCC ID:2BCIE-HX05 Portable device According to §15.247(e)(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g SAR 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: • 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 When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. EDR: Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculatio n SAR Exclusion threshold SAR test exclusion 2.402 1.676 1.47 1±1 2.00 1.58 <5 0.49127 3.00 YES 2.441 1.213 1.32 1±1 2.00 1.58 <5 0.49524 3.00 YES 2.480 -1.179 0.76 -1±1 0.00 1.00 <5 0.31496 3.00 YES 2.402 -0.746 0.84 0±1 1.00 1.26 <5 0.39023 3.00 YES 2.441 1.965 1.57 1±1 2.00 1.58 <5 0.49524 3.00 YES 2.480 -0.379 0.92 0±1 1.00 1.26 <5 0.39651 3.00 YES 2.402 2.822 1.92 2±1 3.00 2.00 <5 0.61847 3.00 YES 2.441 2.328 1.71 2±1 3.00 2.00 <5 0.62347 3.00 YES 2.480 -0.028 0.99 0±1 1.00 1.26 <5 0.39651 3.00 YES GFSK π /4DQPSK 8DQPSK BLE:1M Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculatio n SAR Exclusion threshold SAR test exclusion 2.402 2.249 1.68 2±1 1.00 1.26 <5 0.39023 3.00 YES 2.44 1.028 1.27 1±1 2.00 1.58 <5 0.49514 3.00 YES 2.480 -0.963 0.80 0±1 1.00 1.26 <5 0.39651 3.00 YES GFSK 2M Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculatio n SAR Exclusion threshold SAR test exclusion 2.402 2.285 1.69 2±1 1.00 1.26 <5 0.39023 3.00 YES 2.44 1.398 1.38 1±1 2.00 1.58 <5 0.49514 3.00 YES 2.480 0.156 1.04 0±1 1.00 1.26 <5 0.39651 3.00 YES GFSK Conclusion: For the max result : 0.62347≤ FCC Limit 3.0 for 1g SAR.

Project:HTD02 Author:XU xiaorong FileName: HTD02-APP-RA Date:2023-08-11 Rev:Language:Check: AENG CONFIDENTIAL ShenZhenEastongElectronictechnologyCo.,LTD 411,No.9,YangmeiHuanchengMiddleRoad,Bantian,LonggangDistrict,Shenzhen Page -1- ShenZhenEastongElectronictechnologyCo.,LTD APPROVALSHEET FOR 火芯HTD02 （2.4Gbandinternalantenna） IssuedbyCheckedby ConfirmedbyDate2023-08-11 Customer Confirm Project:HTD02 Author:XU xiaorong FileName: HTD02-APP-RA Date:2023-08-11 Rev:Language:Check: AENG CONFIDENTIAL ShenZhenEastongElectronictechnologyCo.,LTD 411,No.9,YangmeiHuanchengMiddleRoad,Bantian,LonggangDistrict,Shenzhen Page -2- RevisionHistory DateRevisionDescriptionofChanges 2023-08-11R:AAntennaperformanceapprovedbycustomer 1SUMMARY 2GENERALDESCRIPTION 2.1Definitions 3MECHANICALDESCRIPTION 4ELECTRICALPERFORMANCE 4.1Set-up 4.1.1VSWRandreturnloss 4.1.2Efficiency,GainandTRP/TIS 4.1.3MatchingCircuitDescription 4.2MeasurementData 4.2.1VSWR 4.2.2Activeresult 5MECHANICALDRAWING 6CONCLUSION Project:HTD02 Author:XU xiaorong FileName: HTD02-APP-RA Date:2023-08-11 Rev:Language:Check: AENG CONFIDENTIAL ShenZhenEastongElectronictechnologyCo.,LTD 411,No.9,YangmeiHuanchengMiddleRoad,Bantian,LonggangDistrict,Shenzhen Page 4--3- 1Summary Thisreportsummarizestheelectricalresultsoftheproposedantennatosupportthe HTD02program.Wetesttheantennawiththelatestversionhandset. 2GeneralDescription 2.1Definitions VSWR:VoltageStandingWaveRate 3MechanicalDescription 4ElectricalPerformance 4.1Set-up 4.1.1VSWRandreturnloss VSWRmeasurements(S 11 )wereperformedusinganAgilentE5070BNetwork Analyzerandthepreviouslydescribedtestfixture.Coaxialchokeswereusedto mitigatesurfacecurrentsontheoutsideofthecabling.Thetestingwasperformedin freespace. 4.1.2Efficiency,GainandTRP/TIS ThegainoftheantennawasmeasuredinDongXin’s3Danechoicchamberin Shenzhen.Thechamberiscapableofdoingtestsfrom380MHzto6GHz.Coaxial chokesonthefeedcablewereusedtomitigatesurfacecurrents.Themeasurement resultsarecalibratedusingdipolestandards.ForTRPandTISthechamberusesa Agilent8960toestablishtheconnectionwiththemobiledevice.DuringTRPteststhe 8960readsthepowerreceivedthroughthechamberprobeswhilstduringTISteststhe 8960transmitsthroughtheprobe.Alldataisafterwardscorrectedbyacalibration table. 4.1.3MatchingCircuitDescription Nomatching. Project:HTD02 Author:XU xiaorong FileName: HTD02-APP-RA Date:2023-08-11 Rev:Language:Check: AENG CONFIDENTIAL ShenZhenEastongElectronictechnologyCo.,LTD 411,No.9,YangmeiHuanchengMiddleRoad,Bantian,LonggangDistrict,Shenzhen Page 4--4- 4.2MeasurementData Test Point ID Freq. (MHz) TRP (dBm) Gain (dBi) Directivity (dBi) Efficiency (%) 12400.02400.00-0.574.6130.3% 22410.02410.00-0.684.3231.7% 32420.02420.001.486.1534.1% 42430.02430.000.415.0934.0% 52440.02440.000.025.1031.1% 62450.02450.00-0.094.3536.0% 72460.02460.00-0.634.0034.4% 82470.02470.000.244.9833.6% 92480.02480.00-0.973.1039.2% 102490.02490.000.924.4244.7% 112500.02500.002.415.1952.7% Project:HTD02 Author:XU xiaorong FileName: HTD02-APP-RA Date:2023-08-11 Rev:Language:Check: AENG CONFIDENTIAL ShenZhenEastongElectronictechnologyCo.,LTD 411,No.9,YangmeiHuanchengMiddleRoad,Bantian,LonggangDistrict,Shenzhen Page 4--5-

Radiated Emission Below 1G Above 1G Conducted emissions