2AHFT903Pulse Band

Model Battery capacity Charging Time Waterproof level Operating Temperature Pr oduct Fr equency Pulse Band 3.85V/200mAh 2hours 3ATM -10°C-50°C 2402-2480MHz Charging Voltage Battery Life Weight of Pr oduct Bluetooth Version 5V±0.2v 20-25 Days BLE6.2 6.2dBm 17.5g Max. transmission Power Consumption 1. Download the APP Download and install the VeryFit app from the App Store or Google Play Store or scan the QR code below. APP download and pairing The Pulse Band features 3ATM water resistance, long battery life, low latency, and 152 workout modes. It supports all-day heart rate, blood oxygen, stress, and sleep monitoring, as well as body age, exercise load, energy levels, and alarm reminders. For information on these features and frequently asked questions, please open the VeryFit app and go to the "User Guide" page. Function introduction 1. Do not place the product and its accessories under extreme temperatures, otherwise, it may lead to product malfunction, fire, or explosion, which are hazardous. 2. Protect the product from severe impacts or vibrations to prevent damage to the product and its accessories, thereby avoiding product malfunction. 3. Do not disassemble or modify the product and its accessories by yourself. If the product malfunctions, please contact us for after-sales service. 4. Do not connect the magnetic contacts of the charging cable to other metal surfaces to prevent short circuits. Safety instructions 機能紹介 Pulse Bandは、�ATM防水、長時間バッテリー駆動、低遅延、���種類 のワークアウトモードを搭載しています。終日心拍数、血中酸素濃度、ス トレス、睡眠のモニタリングに加え、年齢、運動負荷、エネルギーレベル、 アラーム通知にも対応しています。これらの機能の詳細やよくある質問 については、VeryFitアプリを開き、「ユーザーガイド」ページをご覧くだ さい。 お手入れ �. 製品とその付属品を極端な温度に置かないでください。製品が故障 する可能性があります。故障、火災、爆発の危険があります。 �. 製品や付属品の損傷を防ぐため、強い衝撃や振動から製品を保護し てください。そして製品の故障を回避します。 �. 製品および付属品をご自身で分解したり改造したりしないでくださ い。製品に不具合がある場合は、アフターサービスについてはお問い 合わせください。 �. ショートを防ぐため、充電ケーブルの磁気接点を他の金属面に接続し ないでください。 安全上のご注意 Care and maintenance Three suggestions for use and maintenance: 1. Keep the product clean; 2. Keep the product dry; 3. Do not wear the product too tightly. * Do not use household detergents when cleaning the product, Instead, use a soap-free cleaner. * For stubborn stains, it is recommended to use alcohol to wipe and remove them. Water Resistance: Not suitable for diving, swimming in the ocean, or use in saunas. Suitable for use in swimming pools, showers (cold water) and shallow water areas. 使用とメンテナンスに関する � つの提案: �. 製品を清潔に保ってください。 �. 製品を乾燥した状態に保ってください。 �. 製品をきつく締めすぎないでください。 * 製品を洗浄する際は、家庭用洗剤を使用せず、石鹸を含まない洗剤 を使 用してください。 * 頑固な汚れにはアルコールなどで拭き取ることをおすすめします。 防水: ダイビング、 海水浴、サウナでの使用には適していません。プール、シャ ワー（冷水）、浅瀬での使用に適しています。 Le bracelet connecté Pulse Band est étanche jusqu'à 3ATM, offre une autonomie longue durée, une faible latence et propose 152 modes d'entraînement. Il assure un suivi continu de la fréquence cardiaque, de l'oxygénation sanguine, du stress et du sommeil, et prend également en compte l'âge métabolique, l'intensité de l'effort, le niveau d'énergie et les alarmes. Pour plus d'informations sur ces fonctionnalités et pour consulter la FAQ, veuillez ouvrir l'application VeryFit et vous rendre dans le guide d'utilisation. Présentation des fonctionnalités 1. N'exposez pas le produit et ses accessoires à des températures extrêmes, car cela pourrait entraîner un dysfonctionnement, un incendie ou une explosion, qui sont dangereux. 2. Protégez le produit des chocs violents et des vibrations afin d'éviter tout dommage et tout dysfonctionnement. 3. Ne démontez ni ne modifiez le produit et ses accessoires vous-même. En cas de dysfonctionnement, veuillez nous contacter pour le service après-vente. 4. Ne mettez pas les contacts magnétiques du câble de charge en contact avec d'autres surfaces métalliques afin d'éviter les courts-circuits. Consignes de sécurité Entretien et maintenance Trois conseils d'utilisation et d'entretien: 1. Maintenez le produit propre ; 2. Maintenez-le au sec ; 3. Ne portez pas le produit trop serré. * N'utilisez pas de détergents ménagers pour nettoyer le produit. Privilégiez un nettoyant sans savon. * Pour les taches tenaces, il est recommandé d'utiliser de l'alcool. Étanchéité: Ne convient pas à la plongée, à la baignade en mer ni au sauna. Convient à une utilisation en piscine, sous la douche (eau froide) et dans les zones d'eau peu profonde. �. Bluetoothペアリング �. バンドの充電と起動には、充電ケーブルを使用してください。 �. VeryFit アプリを開く -> スマートフォンのBluetoothをオンにする -> アプリ内でデバイスを検索してペアリングする -> ペ アリングプロ セスを完了する。 注意： バンドが充電中であることを確認し、スマホのBluetoothをオン にして、スマホをバンドの有効な接続範囲内に置いてください （バンド充電中は心拍センサーが赤く点灯し、充電完了時に緑に 点 灯 し ま す ）。 アプリのダウンロードとペアリング �. アプリをダウンロードする App Store、Google Play Store、または以下の QRコードをスキャンして、VeryFit アプリをダウン ロードしてインストールしてください。 APP herunterladen und koppeln 1. App herunterladen Laden Sie die VeryFit-App aus dem App Store oder Google Play Store herunter und installieren Sie sie oder scannen Sie den untenstehenden QR-Code. Téléchargement et appairage de l'application 1. Téléchargez l'application Téléchargez et installez l'application VeryFit depuis l'App Store ou le Google Play Store, ou scannez le code QR ci-dessous. 2. Bluetooth pairing 1. Please use a charging cable to charge and activate the band. 2. Open the VeryFit app -> Turn on your phone's Bluetooth -> Search for devices within the app and pair them -> Complete the pairing process. Note: Please ensure the band is charging, the phone's Bluetooth is turned on, and the phone is within the band's effective connection range (the heart rate sensor on the band lights up red while charging; it turns green when fully charged). Das Pulse Band ist bis 3ATM wasserdicht, bietet eine lange Akkulaufzeit, geringe Latenz und 152 Trainingsmodi. Es unterstützt die ganztägige Überwachung von Herzfrequenz, Blutsauerstoffsättigung, Stress und Schlaf sowie die Anzeige von Körperalter, Trainingsbelastung, Energielevel und Erinnerungsfunktionen. Weitere Informationen zu diesen Funktionen und Antworten auf häufig gestellte Fragen finden Sie in der VeryFit App unter „Benutzerhandbuch“. Funktionsübersicht 1. Setzen Sie das…

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Report No.: TSEA26070068301 Appendix B BLE Scans Setup Area ScanZoom Scan Grid Extents [mm]70.0 x 70.030.0 x 30.0 x 30.0 Grid Steps [mm]12.0 x 12.05.0 x 5.0 x 5.0 Sensor Surface [mm]3.01.4 Graded GridN/AYes Grading RatioN/A1.5 MAIAYY Surface DetectionVMS + 6pVMS + 6p Scan MethodMeasuredMeasured Measurement Results Area ScanZoom Scan Date2026-07-10, 10:282026-07-10, 10:34 psSAR1g [W/Kg]0.0280.029 psSAR10g [W/Kg]0.0130.011 Power Drift [dB]-0.09-0.18 Power ScalingDisabledDisabled Scaling Factor [dB] TSL CorrectionNo correctionNo correction M2/M1 [%]42.3 Dist 3dB Peak [mm]9.1 Test Laboratory: TOWE Lab Measurement Report for Pulse Band, FRONT, ISM 2.4 GHz Band, Bluetooth Low Energy, Channel 39 (2480.000 MHz) Device Under Test Properties ModelDimensions [mm] Pulse Band40.0 x 26.0 x 12.0 Exposure Conditions Phantom Section, TSLPosition, Test Distance [mm] BandGroup, UIDFrequency [MHz], Channel Number Conversion Factor TSL Conductivity [S/m] TSL Permittivity Flat, Head Simulating Liquid FRONT, 0.00ISM 2.4 GHz Band Bluetooth, 10670- AAA 2480.000, 396.971.8339.7 Hardware Setup PhantomTSLProbe, Calibration DateDAE, Calibration Date Twin-SAM V8.0 (30deg probe tilt) - 2168HSL2450EX3DV4 - SN7858, 2026-02-20DAE4ip Sn1846, 2026-01-07

Report No.: TSEA26070068301 Appendix D 1. Test Sample Photo 1: Front View Photo 2: Back View Photo 3: Antenna Locations Report No.: TSEA26070068301 2. Test Positions Photo 4: Front side 0mm Photo 5: Back side 0mm Photo 6: Left side 0mm Photo 7: Right side 0mm Photo 8: Top side 0mm Photo 9: Bottom side 0mm

ReportNo.:CQASZ20260701378E 1Photographs-EUTTestSetup 1.1RadiatedSpuriousEmission 9kHz~30MHz: 30MHz~1GHz: ReportNo.:CQASZ20260701378E Above1GHz: 1.2 ConductedEmission ReportNo.:CQASZ20260701378E 1.3 RFConductedmeasurement

SHENZHEN YUSHENG COMMUNICATION EQUIPMENT CO., LTD ANTENNA REPORT BT FPCpulse band 1. BT 2026-6-24 BT SWR BT efficiecy BT Gain=-4.02dBi TestFS Test Point ID 123456789 Freq. (MHz)240024102420243024402450246024702480 Efficiency (%) 25.9426.3427.1628.7929.5829.6628.852726.95 效率(dB) -5.86-5.79-5.66-5.4-5.29-5.27-5.39-5.68-5.69 增益(dBi) -4.57-4.22-4.1-4.02-4.08-4.24-4.61-4.77-4.09 BT 3D direction diagram Antenna size BT Thank you！ SHENZHEN YUSHENG COMMUNICATION EQUIPMENT CO., LTD Add: 407-411, Floor 4, Building 2, Yuntai Chuanggu Park, southeast of the intersection of Guangming Avenue and Dongchang Road, Guangming District, Shenzhen

CQASZ20260701378E-01 AppendixA:DTSBandwidth TestResult TestModeFreq(MHz) DTSBW [MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict BLE_1M 24020.672401.692402.360.5PASS 24400.672439.692440.360.5PASS 24800.662479.692480.350.5PASS TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 AppendixB:OccupiedChannelBandwidth TestResult TestModeAntennaFreq(MHz) OCB[MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict BLE_1MAnt1 24021.0512401.49652402.5475------ 24401.0512439.49652440.5475------ 24801.0352479.50452480.5395------ TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 AppendixC:Maximumconductedoutputpower TestResultPeak TestModeFreq(MHz) Conducted Peak Powert[dBm] Conducted Limit[dBm] EIRP[dBm] EIRP Limit[dBm] Verdict BLE_1M 24024.20≤304.20≤36PASS 24406.20≤306.20≤36PASS 24805.42≤305.42≤36PASS TestGraphsPeak BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 AppendixD:Maximumpowerspectraldensity TestResult TestModeFreq(MHz)Result[dBm/3kHz]Limit[dBm/3kHz]Verdict BLE_1M 2402-12.46≤8.00PASS 2440-10.08≤8.00PASS 2480-10.78≤8.00PASS TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 AppendixF:Bandedgemeasurements TestResult TestModeChNameFreq(MHz)RefLevel[dBm]Result[dBm]Limit[dBm]Verdict BLE_1M Low24023.73-43.45≤-16.27PASS High24804.58-43.33≤-15.42PASS TestGraphs BLE_1M_Ant1_Low_2402 BLE_1M_Ant1_High_2480 AppendixG:ConductedSpuriousEmission TestResult TestModeFreq(MHz) FreqRange [MHz] RefLevel [dBm] Result[dBm]Limit[dBm]Verdict BLE_1M 2402 Reference3.513.51---PASS 30~10003.51-51.57≤-16.49PASS 1000~265003.51-40.46≤-16.49PASS 2440 Reference5.135.13---PASS 30~10005.13-52.12≤-14.87PASS 1000~265005.13-41.51≤-14.87PASS 2480 Reference4.934.93---PASS 30~10004.93-51.18≤-15.07PASS 1000~265004.93-40.61≤-15.07PASS TestGraphs BLE_1M_Ant1_2402_0~Reference BLE_1M_Ant1_2402_30~1000 BLE_1M_Ant1_2402_1000~26500 BLE_1M_Ant1_2440_0~Reference BLE_1M_Ant1_2440_30~1000 BLE_1M_Ant1_2440_1000~26500 BLE_1M_Ant1_2480_0~Reference BLE_1M_Ant1_2480_30~1000 BLE_1M_Ant1_2480_1000~26500 AppendixH:DutyCycle TestResult TestModeFreq(MHz) ONTime [ms] Period [ms] XDC [%] xFactor LimitVerdict BLE_1M 24022.142.500.856085.600.68------ 24402.142.500.856085.600.68------ 24802.142.500.856085.600.68------ TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480

SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD 102A,102B,Building2,ShanghenglangNewIndustrialZone,ShanghenglangCommunity, DalangStreet,LonghuaDistrict,Shenzhen,Guangdong,People’sRepublicofChina,518000 Telephone:+86-755-26648640 Fax:+86-755-26648637 Website:www.cqa-cert.com ReportTemplateVersion:V06 ReportTemplateRevisionDate:2026-01-30 TestReport Thetestreportiseffectiveonlywithbothsignatureandspecializedstamp,Theresult(s)showninthisreportreferonly tothesample(s)tested.WithoutwrittenapprovalofCQA,thisreportcan’tbereproducedexceptinfull. ReportNo.:CQASZ20260701378E-01 Applicant:ShenzhenDOIntelligentTechnologyCo.,Ltd AddressofApplicant:11thFloor,3#Building,GuoleTechPark,LirongRoad,Dalang,Longhua District,Shenzhen,China EquipmentUnderTest(EUT): Product:PulseBand ModelNo.:PulseBand,TR5 TestModelNo.:PulseBand BrandName:IDO FCCID:2AHFT903 Standards:47CFRPart15,SubpartC KDB558074D0115.247MeasGuidancev05r02 ANSIC63.10:2020 DateofReceipt:2026-07-01 DateofTest:2026-07-01to2026-07-10 DateofIssue:2026-7-24 TestResult:PASS* *Intheconfigurationtested,theEUTcompliedwiththestandardsspecifiedabove. TestedBy: (LewisZhou) ReviewedBy: (TimoLei) ApprovedBy: (JackAi) SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260701378E-01 Page: 2 of 30 1Version RevisionHistoryOfReport ReportNo.Version Description IssueDate CQASZ20260701378E-01Rev.01Initialreport2026-7-24 SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260701378E-01 Page: 3 of 30 2TestSummary TestItemTestRequirementTestmethodResult AntennaRequirement 47CFRPart15,SubpartCSection 15.203/15.247(c) ANSI C63.10- 2020+Cor.1- 2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS ACPowerLine Conducted Emission 47CFRPart15,SubpartCSection 15.207 ANSI C63.10- 2020+Cor.1- 2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS ConductedPeakOutput Power 47CFRPart15,SubpartCSection 15.247(b)(3) ANSI C63.10- 2020+Cor.1- 2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS 6dBOccupied Bandwidth 47CFRPart15,SubpartCSection 15.247(a)(2) ANSI C63.10- 2020+Cor.1- 2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS PowerSpectralDensity 47CFRPart15,SubpartCSection 15.247(e) ANSI C63.10- 2020+Cor.1- 2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS Band-edgeforRF ConductedEmissions 47CFRPart15,SubpartCSection 15.247(d) ANSI C63.10- 2020+Cor.1- 2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS RFConductedSpurious Emissions 47CFRPart15,SubpartCSection 15.247(d) ANSI C63.10- 2020+Cor.1- 2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS RadiatedSpurious Emissions 47CFRPart15,SubpartCSection 15.205/15.209 ANSI C63.10- 2020+Cor.1- 2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS Restrictedbandsaround fundamentalfrequency (RadiatedEmission) 47CFRPart15,SubpartCSection 15.205/15.209 ANSI C63.10- 2020+Cor.1- 2023+C63.10a-2024+ ErratatoC63.10a-2024 PASS SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260701378E-01 Page: 4 of 30 3Contents Page 1VERSION..........................................................................................................................................................................2 2TESTSUMMARY............................................................................................................................................................3 3CONTENTS......................................................................................................................................................................4 4GENERALINFORMATION...........................................................................................................................................5 4.1CLIENTINFORMATION.................................................................................................................................................5 4.2GENERALDESCRIPTIONOFEUT.................................................................................................................................5 4.3ADDITIONALINSTRUCTIONS........................................................................................................................................7 4.4TESTENVIRONMENT...................................................................................................................................................8 4.5DESCRIPTIONOFSUPPORTUNITS...............................................................................................................................8 4.6TESTCONFIGURATION................................................................................................................................................8 4.7STATEMENTOFTHEMEASUREMENTUNCERTAINTY....................................................................................................9 4.8TESTLOCATION........................................................................................................................................................10 4.9TESTFACILITY..........................................................................................................................................................10 4.10DEVIATIONFROMSTANDARDS................................................................................................................................10 4.11OTHERINFORMATIONREQUESTEDBYTHECUSTOMER..........................................................................................10 4.12EQUIPMENTLIST.....................................................................................................................................................11 5TESTRESULTSANDMEASUREMENTDATA.....................................................................................................12 5.1ANTENNAREQUIREMENT..........................................................................................................................................12 5.2CONDUCTEDEMISSIONS............................................................................................................................................13 5.3CONDUCTEDPEAKOUTPUTPOWER..............................................…

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Sushi TOWE Wireless Testing (Shenzhen) Co., Ltd. Report No.: TSEA26070068301 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. FCC SAR Test Report Applicant: Shenzhen DO Intelligent Technology Co., Ltd EUT Description: Pulse Band Model: Pulse Band, TR5 Test Model: Pulse Band Brand: IDO FCC ID: 2AHFT903 Standards: FCC 47CFR §2.1093 Date of Receipt: 2026/07/02 Date of Test: 2026/07/10 Date of Issue: 2026/07/20 TOWE. tested the above equipment in accordance with the requirements set forth in the above standards. The test results show that the equipment tested is capable of demonstrating compliance with the requirements as documented in this report. the results documented in this report apply only to the tested sample, under the conditions and modes of operation as described herein. It is the manufacturer's responsibility to assure that additional production units of the model are manufactured with identical electrical and mechanical components. All sample tested were in good operating condition throughout the entire test program. Measurement Uncertainties are published for informational purposes only and were not taken into account unless noted otherwise. without written approval of TOWE, the test report shall not be reproduced except in full. Jim Huang Approved By: Jack Li Reviewed By: Page 2 / 21 Report No.: TSEA26070068301 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. Revision History Rev. Issue Date Description Revised by 01 2026/07/20 Original Jack Li Page 3 / 21 Report No.: TSEA26070068301 Sushi TOWE Wireless Testing(Shenzhen) Co., Ltd. Email: [email protected] Tel.: +86-755-27212361 TOWE-QP-15-F05 Rev.1.1 All rights reserved. Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from TOWE. Table of Contents 1 Summary of Test Results .................................................................................................................................. 4 2 Guidance Applied ............................................................................................................................................... 5 3 Lab Information .................................................................................................................................................. 5 3.1 Testing Location ...................................................................................................................................................................... 5 3.2 Test Facility / Accreditations ................................................................................................................................................ 5 3.3 Ambient Condition .................................................................................................................................................................. 5 4 Client Information ............................................................................................................................................... 5 4.1 Applicant ................................................................................................................................................................................... 5 4.2 Manufacturer ............................................................................................................................................................................ 5 4.3 Factory ....................................................................................................................................................................................... 5 5 Product Information ........................................................................................................................................... 6 6 RF Exposure Limits ........................................................................................................................................... 7 7 Introduction ......................................................................................................................................................... 8 7.1 SAR Definition .......................................................................................................................................................................... 8 8 SAR Measurements System ............................................................................................................................. 9 8.1 The SAR Measurement Set-up ............................................................................................................................................. 9 8.2 E-Field Probe .......................................................................................................................................................................... 10 8.3 Data Acquisition Electronics (DAE) .................................................................................................................................. 10 8.4 Phantom .................................................................................................................................................................................. 11 8.5 Device Holder ..................................................................…

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Report No.: TSEA26070068301 Appendix C EX3DV4-SN 7858 DAE4-SN 1846 D2450V2-SN 1099

ShenzhenDOIntelligentTechnologyCo.,Ltd Date:July16,2026 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:AttestationStatementsPart2.911(d)(5)(i)requestforFCCID:2AHFT903 [ShenzhenDOIntelligentTechnologyCo.,Ltd](“theapplicant”)certifiesthatthe equipmentforwhichauthorizationissoughtisnot“covered”equipmentprohibited fromreceivinganequipmentauthorizationpursuanttosection2.903oftheFCCrules. Wealsocertifythat,asofthedateofthefilingoftheapplication,theequipmentdoes notutilizecyber-securityoranti-virussoftwarefromKasperskyLab,Inc,oranyofits successorsandassignees,whichisalsoonthe“coveredlist”. Sincerely, (Applicantsignature)： (Applicantprintedname)：WuDajun (Title)：Generalmanager_ (Company)：ShenzhenDOIntelligentTechnologyCo.,Ltd ShenzhenDOIntelligentTechnologyCo.,Ltd Date:July16,2026 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:AttestationStatementsPart2.911(d)(5)(ii)requestforFCCID:2AHFT903 [ShenzhenDOIntelligentTechnologyCo.,Ltd](“theapplicant”)certifiesthat,asofthe dateofthefilingoftheapplication,theapplicantisnotidentifiedontheCoveredListas anentityproducing“covered”equipment. Sincerely, (Applicantsignature)： (Applicantprintedname)：WuDajun (Title)：Generalmanager_ (Company)：ShenzhenDOIntelligentTechnologyCo.,Ltd

C Report No.: TSEA26070068301 Appendix A System Check 2450 MHz Head Scans Setup Area ScanZoom Scan Grid Extents [mm]40.0 x 96.030.0 x 30.0 x 30.0 Grid Steps [mm]10.0 x 12.05.0 x 5.0 x 1.5 Sensor Surface [mm]3.01.4 Graded GridN/AYes Grading RatioN/A1.5 MAIAN/AN/A Surface DetectionVMS + 6pVMS + 6p Scan MethodMeasuredMeasured Measurement Results Area ScanZoom Scan Date2026-07-10, 08:352026-07-10, 08:43 psSAR1g [W/Kg]5.575.56 psSAR10g [W/Kg]2.592.58 Power Drift [dB]0.01-0.02 Power ScalingDisabledDisabled Scaling Factor [dB] TSL CorrectionNo correctionNo correction Test Laboratory: TOWE Lab System Performance Check Report Summary DipoleFrequency [MHz]TSLPower [dBm]Dev. 1g [%]Dev. 10g [%]Dev. Peak [%]Iso. Error [%] D2450V2 - SN10992450.0HSL20.07.88.711.0-1.4 Exposure Conditions Phantom Section, TSLTest Distance [mm]BandGroup, UIDFrequency [MHz], Channel NumberConversion FactorTSL Conductivity [S/m]TSL Permittivity Flat, Head Simulating Liquid10CW, 0--2450.000, 06.971.8139.8 Hardware Setup PhantomTSLProbe, Calibration DateDAE, Calibration Date Twin-SAM V8.0 (30deg probe tilt) - 2168HSL2450EX3DV4 - SN7858, 2026-02-20DAE4ip Sn1846, 2026-01-07

ReportNo.:CQASZ20260701378E Photographs-EUTConstructionalDetails ReportNo.:CQASZ20260701378E ReportNo.:CQASZ20260701378E ReportNo.:CQASZ20260701378E ReportNo.:CQASZ20260701378E

7X5mm 5X5mm 5.5X2.8mm 7X5mm 10.4X3mm Pulse Band底壳镭雕 Pulse Band IC: 23023-2AHFT903 FCC ID:2AHFT903

ReportNo.:CQASZ20260701378E Photographs-EUTConstructionalDetails ReportNo.:CQASZ20260701378E ReportNo.:CQASZ20260701378E ReportNo.:CQASZ20260701378E

ShenzhenDOIntelligentTechnologyCo.,Ltd Date:July16,2026 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:CONFIDENTIALITYREQUESTFOR Product: PulseBand ModelNO.: PulseBand,TR5 FCCID:2AHFT903 ToWhomItMayConcern: Thisletterservesasanofficialrequestforconfidentialityundersections0.457and0.459 ofCFR47.Wehaverequestedthatthe(Blockdiagram,circuitschematic,and operatingdescription)requiredtobesubmittedwiththisapplicationbepermanently withheldfrompublicreview. SPECIFYREASONFORREQUEST(i.e.theabovedocumentsarecompany proprietaryinformationthatcouldnevergetintothepossessionofyour competition). Pleasecontactmeifthereisanyinformationyoumayneed. Sincerely, (Signature) ： (Printname)：WuDajun (Title) ： Generalmanager_ (Company) ： ShenzhenDOIntelligentTechnologyCo.,Ltd

ShenzhenDOIntelligentTechnologyCo.,Ltd ModelConfirmationLetter We,ShenzhenDOIntelligentTechnologyCo.,Ltdcertifytheproduct:PulseBand ModelNo.:PulseBand,TR5 FCCID: 2AHFT903 Theirelectricalcircuitdesign,layout,componentsusedandinternalwiringareidentical, Onlytheappearancecolorweredifferent. Signiture: GranteeContact:WuDajun CompanyName:ShenzhenDOIntelligentTechnologyCo.,Ltd Date:July16,2026

ShenzhenDOIntelligentTechnologyCo.,Ltd Date:July16,2026 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:LETTEROFAGENTAUTHORIZATION FCCID:2AHFT903 ToWhomItMayConcern: We,theundersigned,herebyauthorizeShenzhenHuaxiaTestingTechnologyCo.,Ltd.toacton ourbehalfinallmattersrelatingtoapplicationforequipmentauthorization,includingthesigning ofalldocumentsrelatingtothesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderissubjecttothe denialofbenefits,includingFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseAct of1988,21U.S.C.853(a). Thisagreementexpiresoneyearfromthecurrentdate. Sincerely, (Signature) ： (Printname)：WuDajun (Title)：Generalmanager_ (Company)：ShenzhenDOIntelligentTechnologyCo.,Ltd

ShenzhenDOIntelligentTechnologyCo.,Ltd 11thFloor,3#Building,GuoleTechPark,LirongRoad,Dalang,LonghuaDistrict, Shenzhen,China FederalCommunicationsCommission AuthorizationandEvaluationDivision EquipmentAuthorizationBranch 7435OaklandMillsRoad Columbia,MD21046 2026-7-16 U.S.AgentDesignation {ShenzhenDOIntelligentTechnologyCo.,Ltd}acknowledgestheirconsentforthefollowingcontactlocatedin theUnitedStatestoactastheiragentforserviceofprocessfortheequipmentforwhichauthorizationissought (FCCID:2AHFT903): NameandcompanyofU.S.agent:BridgeportAdvisoryLLC PhysicalU.S.addressofagent:3330W38THPL,CHICAGO,IL60632,UnitedStates FRNofU.S.agent:0037566148 EmailaddressofU.S.agent:[email protected] ContactNO.:(708)680-6688 BridgeportAdvisoryLLC.acknowledgestheirobligationtoacceptserviceofprocessonbehalfof{Shenzhen DOIntelligentTechnologyCo.,Ltd}. {ShenzhenDOIntelligentTechnologyCo.,Ltd}withtheFRN[{0025289893}]acceptsitsobligationtomaintain anagentforserviceofprocessintheUnitedStatesfornolessthanoneyearaftereitherthegranteehas permanentlyterminatedallmarketingandimportationoftheapplicableequipmentwithintheU.S.,orthe conclusionofanyCommission-relatedadministrativeorjudicialproceedinginvolvingtheequipment,whicheveris later. Bysigningthisform,weconfirmtheaboveandthatweareawareoftheapplicationrequirementslistedunder§ 2.911(d)(7). TheinformationprovidedinthisletterisbasedonthereferencedrulepartsofTitle47oftheCFRaswellasKDB 986446D01. Anexpirationdateforthisletterdoesnotexist.IncasetheU.S.agentchanges,thegranteeisobligatedtonotify theFCCwithin30daysviathegrantingTCB. Sincerely, Signature {WuDajun} {Generalmanager} {ShenzhenDOIntelligentTechnologyCo.,Ltd} Signature MrYongLiu ManagingMember BridgeportAdvisoryLLC 4 8 _ [ m o d e l ] U S _ A g e n t _ 2 . 9 1 1 ( d ) ( 7 ) - U , V 0 5