2BXS6-HEYGOS1HeyGo-S1

Date:15September2026 To:FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 US Heygo Co., Ltd. A Attestation Section2.911(d)(5)(i)andSection2.911(d)(5)(ii) (KDB986446D01CoveredEquipment) Section2.911(d)(5)(i) HeygoCo.,Ltd.certifiesthattheequipmentforwhichauthorizationissoughtisnot “covered”equipmentprohibitedfromreceivinganequipmentauthorizationpursuant tosection2.903oftheFCCrules. Thesoftwaretobeloadedpriortomarketingoftheequipmentidentifiedbelowisnot "covered"softwaremanufacturedbyanyentityincludingpredecessors,successors, parents,subsidiaries,oraffiliatesoranyentitywhichhasrebrandedorrelabeledthe softwareproducedbytheentity(ies)identifiedonthe"CoveredList"DA24-886and KDB986446D01CoveredEquipmentGuidancesectionB(2a). HeygoCo.,Ltd.furthercertifiesthatnoCybersecurityoranti-virussoftware producedorprovidedbyKasperskyLab,Inc.oranyofitssuccessorsandassignees, includingequipmentwithintegratedKasperskyLab,Inc.(oranyofitssuccessorsand assignees)cybersecurityoranti-virussoftwareisinstalledintheequipmentbeing certified. Section2.911(d)(5)(ii) ContactPerson Heygo 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 a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Type of Equipment subject to FCC Certification: FCC ID: 2BXS6-HEYGOS1 If you have any questions, please feel free to contact me : Position in the Company: Manager Date of Signature: 2026-09-15 ___________________________ Signatory WEI XING (signature of the applicant)

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Date:September15,202 Heygo Co., Ltd. 6 To:FederalCommunicationsCommission, Authorization&EvaluationDivision, 7435OaklandMillsRoad, Columbia,MD21046 ToWhomItMayConcern: TheHeygoCo.,Ltd.theundersigned,herebyauthorizesMr.WuXuewenfromShenzhen BALUNTechnologyCo.,Ltd.,toactonthebehalfoftheHeygoCo.,Ltd.solelyinmatters relatingtotheapplicationforanFCCequipmentauthorizationforFCCID:2BXS6-HEYGOS1 includingthesigningofdocumentsinconnectionwiththisApplication.Necessaryactscarried outbyShenzhenBALUNTechnologyCo.,Ltd.inconnectionwiththeApplicationshallhavethe sameeffectasactsoftheHeygoCo.,Ltd. TheHeygoCo.,Ltd.alsoherebycertifythatnopartytothisapplicationissubjecttoadenialof benefits,includingFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseActof1988, 21U.S.C.Section862. YoursSincerely, Print name: WEI XING Title:Manager Signature:

Date:September15,202 Heygo Co., Ltd. 6 To:FederalCommunicationsCommission, Authorization&EvaluationDivision, 7435OaklandMillsRoad, Columbia,MD21046 RE: FCCID:2BXS6-HEYGOS1 FCCCertificationConfidentialityRequest Gentlemen: Thisletteristocomplywith47CFR0.457and0.459pertainingtoconfidentialitymaterial.Heygo Co.,Ltd.requeststhatthefollowingdocumentsregardingthissubmissionforFCCID:2BXS6- HEYGOS1bekeptLong-Termconfidential: Exhibit Type Block Diagram Schematics Operational Description BOM Tune-Up Procedure File Name Block Diagram.pdf Schematics.pdf Operational Description.pdf BOM.pdf Ti-EE26080458-AT Tune-Up Procedure.pdf And below exhibit kept short-term confidential (180days): Exhibit Type External Photos Internal Photos Test Setup Photos Users Manuals File Name External Photo.pdf Internal Photo.pdf Test Setup Photos.pdf Users Manual.pdf Those documents contain detailed system and equipment description and related information about the product whichHeygo Co., Ltd.considers to be confidential proprietary, a custom design and, otherwise, not releasable to the general public. Since this design is a basis form which future technological products will evolve,Heygo Co., Ltd.considers this information would be of benefit to its competitors, and that the disclosure of the information in these documents would give competitors an unfair advantage in themarket. Thank you for your attention to thismatter. Print name: WEI XING Title:Manager Signature:

Report No.: Ti-EE26080458-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 1 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Body-2 (2026-04-30) Add: 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen TEST REPORT Applicant: Heygo Co., Ltd. Address: Room A302, Area A3, Vanke Cloud Design Commune, Xingke Road, Xili Community, Xili Street, Nanshan District, Shenzhen City, China Equipment Type: HeyGo-S1 Model Name: HeyGo S1 Brand Name: Heygo FCC ID: 2BXS6-HEYGOS1 Test Standard: FCC 47 CFR Part 2.1093 (refer to section 3.1) Maximum SAR: Body 2.4GHz (1 g): 0.21 W/kg Sample Arrival Date: Aug. 14, 2026 Test Date: Sep. 01, 2026 Date of Issue: Sep. 14, 2026 ISSUED BY: Shenzhen BALUN Technology Co., Ltd. Tested by: Xu Rui Checked by: Zong Liyao Approved by: Liao Jianming (Technical Director) _______________ _______________ _______________ Report No.: Ti-EE26080458-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 2 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Body-2 (2026-04-30) Add: 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen Revision History Version Issue Date Revisions Content Rev. 01 Sep. 14, 2026 Initial Issue TABLE OF CONTENTS 1 GENERAL INFORMATION ........................................................................................................ 4 1.1 Test Laboratory ............................................................................................................ 4 1.2 Test Location ................................................................................................................ 4 1.3 Test Environment Condition .......................................................................................... 4 2 PRODUCT INFORMATION ....................................................................................................... 5 2.1 Applicant Information .................................................................................................... 5 2.2 Manufacturer Information .............................................................................................. 5 2.3 General Description for Equipment under Test (EUT) ................................................... 5 2.4 Ancillary Equipment ...................................................................................................... 5 2.5 Technical Information ................................................................................................... 6 3 SUMMARY OF TEST RESULT ................................................................................................. 7 3.1 Test Standards ............................................................................................................. 7 3.2 Device Category and SAR Limit ................................................................................... 8 3.3 Test Result Summary ................................................................................................... 9 3.4 Test Uncertainty ......................................................................................................... 10 4 MEASUREMENT SYSTEM ..................................................................................................... 11 4.1 Specific Absorption Rate (SAR) Definition .................................................................. 11 4.2 DASY SAR System .................................................................................................... 12 5 SYSTEM VERIFICATION ........................................................................................................ 19 5.1 Purpose of System Check .......................................................................................... 19 5.2 System Check Setup .................................................................................................. 19 6 TEST POSITION CONFIGURATIONS .................................................................................... 20 6.1 Body-worn Position Conditions ................................................................................... 20 7 MEASUREMENT PROCEDURE ............................................................................................. 21 Report No.: Ti-EE26080458-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 3 / 37 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Body-2 (2026-04-30) Add: 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen 7.1 Measurement Process Diagram ................................................................................. 21 7.2 SAR Scan General Requirement ................................................................................ 22 7.3 Measurement Procedure ............................................................................................ 23 7.4 Area & Zoom Scan Procedure .................................................................................... 23 8 CONDUCTED RF OUTPUT POWER ...................................................................................... 24 9 TEST EXCLUSION CONSIDERATION ................................................................................... 25 9.1 Antenna location sketch .............................................................................................. 25 10 TEST RESULT ........................................................................................................................ 26 10.1 Bluetooth .................................................................................................................... 26 11 SAR Measurement Variability .................................................................................................. 27 12 SIMULTANEOUS TRANSMISSION ..................…

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Report No.: Ti-EE26080458-AC 1 / 32 CALIBRATION REPORT F.1 E-Field Probe (EX3DV4 - SN: 7510) Report No.: Ti-EE26080458-AC 2 / 32 Report No.: Ti-EE26080458-AC 3 / 32 Report No.: Ti-EE26080458-AC 4 / 32 Report No.: Ti-EE26080458-AC 5 / 32 Report No.: Ti-EE26080458-AC 6 / 32 Report No.: Ti-EE26080458-AC 7 / 32 Report No.: Ti-EE26080458-AC 8 / 32 Report No.: Ti-EE26080458-AC 9 / 32 Report No.: Ti-EE26080458-AC 10 / 32 Report No.: Ti-EE26080458-AC 11 / 32 Report No.: Ti-EE26080458-AC 12 / 32 Report No.: Ti-EE26080458-AC 13 / 32 Report No.: Ti-EE26080458-AC 14 / 32 Report No.: Ti-EE26080458-AC 15 / 32 Report No.: Ti-EE26080458-AC 16 / 32 Report No.: Ti-EE26080458-AC 17 / 32 Report No.: Ti-EE26080458-AC 18 / 32 Report No.: Ti-EE26080458-AC 19 / 32 Report No.: Ti-EE26080458-AC 20 / 32 Report No.: Ti-EE26080458-AC 21 / 32 Report No.: Ti-EE26080458-AC 22 / 32 Report No.: Ti-EE26080458-AC 23 / 32 F.2 Data Acquisition Electronics (DAE4 - SN:1711) Report No.: Ti-EE26080458-AC 24 / 32 Report No.: Ti-EE26080458-AC 25 / 32 Report No.: Ti-EE26080458-AC 26 / 32 F.3 2450 MHz Dipole Report No.: Ti-EE26080458-AC 27 / 32 Report No.: Ti-EE26080458-AC 28 / 32 Report No.: Ti-EE26080458-AC 29 / 32 Report No.: Ti-EE26080458-AC 30 / 32 Report No.: Ti-EE26080458-AC 31 / 32 Report No.: Ti-EE26080458-AC 32 / 32 D2450V2 Dipole impedance and return loss Validation Meas. Results Current Meas. Previous Meas. Max. Deviation Meas. Data 2026.05.06 2025.05.06 / Return Loss(dB) -24.133 -27.271 -11.51% Impedance 51.716 Ω + 5.464 jΩ 51.780 Ω + 5.716 jΩ -0.252Ω (Imaginary part) --END OF REPORT--

Report No.: Ti-EE26080458-AP 8.1.1 Bluetooth Output Power 8.1.2 Bluetooth Duty Cycle 8 CONDUCTED RF OUPUT POWER 1 / 3 Report No.: Ti-EE26080458-AP 8.1 Bluetooth 8.1.1 Bluetooth Output Power Test Mode Modulati on Channel number Frequen cy(MHz) Power setting AV power (dBm) Tune up (dBm) SAR Test 02402 86.927.50Yes 19 2440 86.867.50Yes 39 2480 86.587.50Yes Bluetooth-CH0-Full Power Note: Since bluetooth BLE mode is the maximum output power mode，SAR measurements were performed with test software using BLE-1M modulation. BT BLE-1M 2 / 3 Report No.: Ti-EE26080458-AP 8.1.2 Bluetooth Duty Cycle The Bluetooth duty cycle is 62.18% as following figure, according to 2016 Oct. TCB workshop for Bluetooth SAR scaling need further consideration and the maximum duty cycle is 100%, therefore the actual duty cycle will be scaled up to 100% for Bluetooth reported SAR calculation. Duty Cycle 3 / 3

深圳市飞宇信电子有限公司 ShenzhenFeiyuxinElectroniceCo.,Ltd 规格承认书 SpecificationForApproval 客户名称：比特天空 Customer 规格描述： FPC L23.5*12.23*T=0.2mm-黑色 Partname 飞宇信料号：YP26-1601-0314-B PartNo 客户料号： CustomerPartNo 客户确认Customerconfirmation 确认Confirmation核实check批准Approver 制造厂商承认Manufacturerrecognition 销售代表Sales拟制Drafters核实check批准Approver 李贺 感谢给予敝公司送样承认之机会.如惠蒙承认通过,烦请将此表签回敝公司. Thankyouforgivingusthechancetoapprovesamples.Ifyouagreetopassit,please kindlysenditbacktous. 深圳市飞宇信电子有限公司 地址：中国深圳市龙岗区横岗镇西坑工业区宝桐南路76号飞宇信工业园 电话：0755-89737230传真：0755-89737181 http://www.fyxdz.com - 1 深圳市飞宇信电子有限公司 ShenzhenFeiyuxinElectroniceCo.,Ltd 目录 修改记 Catalog 1.产品尺寸图..................................................3 2.产品外观....................................................4 3.天线性能参数 ................................................4 4.环境试验....................................................5 5.天线性能测试................................................6-7 录 版本日期工程师修改内容 A02026-8-13新建图面 2 R o H S C o m p l i a n t 通 孔 （ 定 位 ） 通 孔 3 M 3 0 0 L E S 3 M 3 0 0 L E S 通 孔 （ 定 位 ） 深圳市飞宇信电子有限公司 ShenzhenFeiyuxinElectroniceCo.,Ltd 2.产品外观 外型尺寸固定方23.5*12.23mm式 外壳颜 色电黑色缆- 3.天线性能参数 项目特性单位 频率范围 MH 2400-2500 z 输出阻抗50Ω 驻波比—≤2.5— 增益dB0.8i 极化方式垂直极化 辐射方向全向 最大输入功率5W 工作温度-40～+70°C 储存温度-40～+70°C 4 深圳市飞宇信电子有限公司 ShenzhenFeiyuxinElectroniceCo.,Ltd 环境试验报告 5.1高低温恒湿试验 试验项目高温、低温、恒湿试验 检测设备恒温恒湿试验箱 检验标准1.金属表面镀层无脱落、裂痕、起皱等不良；非金属部分不能有变色、裂痕、变 形、脱胶等现象。 试验名称试验项目要求试验方法结果判定 高温试验 温度（°C） 样品试验持续时间（H） 恢复时间（H） 70±3°C 12H 1H 试验步骤： a)将被测件放入试验箱，再将 高温箱温度调到70°C±3°C，， 监控时间。 b)试验后放置常温1小时，进 行常规检验。 合格 低温试验 温度（°C） 试验样品持续时间（H） 恢复时间（H） -40±3 12H 1H 试验步骤： a)将被测件放入试验箱，再将 低温箱温度调到-40°C±3°C，监 控时间。 b)试验后放置常温1小时，进 行常规检验。 合格 恒定湿热 试验 温度（°C） 相对湿度（%） 试验持续时间（H） 恢复时间（H） 40±3°C 70-85% 24H 1H a)将被测件放入试验箱，再将 试验箱温度调到40°C±3°C，湿 度为70-85%，监控时间。 b)试验后放置常温1小时，进 行常规检验。 合格 检验员:郭广芬批准：谢周军 5.2盐雾试验 试验项目盐雾试验 检测设备盐雾测试机 检验标准1.金属表面镀层无脱落；外观无生锈、腐蚀、氧化等不良现象。 试验名称试验项目要求试验方法结果判定 盐雾试验 1.NaCl浓度： 2.空气压力： 3.PH值： 4.喷雾量： 5.盐水测试温度设定 a.试验室温度： b.压力桶温度： 6.测试时间： 40-60g/1kg 1.0±0.01kgf㎡ 6.5-7.2 1.0-2.0ml/80c/h。 35±1°C 47±1°C 24H 试验步骤： a)将盐雾试验机，调制 到相关测试条件。 b)将被测件放入盐雾 试验机，放置24小时。 试验后用清水冲洗，目 测被测件外观，进行常 规检验。 合格 检验员:郭广芬批准：谢周军 5 深圳市飞宇信电子有限公 & Freqency (MHz) Gain(dBi)Efficiency(%) 2400-0.2733.91 24100.4234.92 2420-0.2236.21 24300.235.85 24400.841.81 24500.840.92 24600.6338.61 24700.3436.32 24800.3736.31 2490-0.1735.09 2500-0.2135.54 司 ShenzhenFeiyuxinElectroniceCo.,Ltd 6.天线性能测试 6 2400M 2450M 2500M 7

Report No.: Ti-EE26080458-601 Tel: +86-755-66850100 E-mail: [email protected] Page No. 1 / 55 Web: www.titcgroup.com Template No.: TRP-FCC&ISED 247 (2022-01-12) Add: 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen TEST REPORT Applicant: Heygo Co., Ltd. Address: Room A302, Area A3, Vanke Cloud Design Commune, Xingke Road, Xili Community, Xili Street, Nanshan District, Shenzhen City, China Equipment Type: HeyGo-S1 Model Name: HeyGo S1 Brand Name: Heygo FCC ID: 2BXS6-HEYGOS1 ISED Number: 36088-HEYGOS1 Test Standard: 47 CFR Part 15 Subpart C RSS-Gen Issue 5 RSS-247 Issue 4 (refer to section 3.1) Sample Arrival Date: Aug. 14, 2026 Test Date: Aug. 18, 2026 - Aug. 27, 2026 Date of Issue: Sep. 14, 2026 ISSUED BY: Shenzhen BALUN Technology Co., Ltd. Tested by: Li Renyu Checked by: Li Ganming Approved by: Tolan Tu (Testing Director) _______________ _______________ _______________ Report No.: Ti-EE26080458-601 Tel: +86-755-66850100 E-mail: [email protected] Page No. 2 / 55 Web: www.titcgroup.com Template No.: TRP-FCC&ISED 247 (2022-01-12) Add: 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen Revision History Version Issue Date Revisions Rev. 01 Sep. 14, 2026 Initial Issue TABLE OF CONTENTS 1 GENERAL INFORMATION ........................................................................................................ 4 1.1 Test Laboratory ............................................................................................................ 4 1.2 Test Location ................................................................................................................ 4 2 PRODUCT INFORMATION ....................................................................................................... 5 2.1 Applicant Information .................................................................................................... 5 2.2 Manufacturer Information .............................................................................................. 5 2.3 General Description for Equipment under Test (EUT) ................................................... 5 2.4 Technical Information ................................................................................................... 6 2.5 Additional Instructions ................................................................................................... 7 3 SUMMARY OF TEST RESULTS ............................................................................................... 8 3.1 Test Standards ............................................................................................................. 8 3.2 Test Verdict .................................................................................................................. 9 4 GENERAL TEST CONFIGURATIONS .................................................................................... 10 4.1 Test Environments ...................................................................................................... 10 4.2 Test Equipment List .................................................................................................... 10 4.3 Test Software List ....................................................................................................... 11 4.4 Measurement Uncertainty ........................................................................................... 11 4.5 Description of Test Setup ........................................................................................... 12 4.6 Measurement Results Explanation Example ............................................................... 15 5 TEST ITEMS ........................................................................................................................... 16 5.1 Antenna Requirements ............................................................................................... 16 5.2 Output Power ............................................................................................................. 17 5.3 Occupied Bandwidth ................................................................................................... 19 5.4 Conducted Spurious Emission .................................................................................... 21 Report No.: Ti-EE26080458-601 Tel: +86-755-66850100 E-mail: [email protected] Page No. 3 / 55 Web: www.titcgroup.com Template No.: TRP-FCC&ISED 247 (2022-01-12) Add: 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen 5.5 Band Edge (Authorized-band band-edge) ................................................................... 23 5.6 Conducted Emission ................................................................................................... 25 5.7 Radiated Spurious Emission ....................................................................................... 26 5.8 Band Edge (Restricted-band band-edge) .................................................................... 31 5.9 Power Spectral density (PSD) .................................................................................... 34 ANNEX A TEST RESULT ........................................................................................................... 35 A.1 Output Power, E.I.R.P ................................................................................................ 35 A.2 Occupied Bandwidth ................................................................................................... 37 A.3 Conducted Spurious Emissions .................................................................................. 39 A.4 Band Edge (Authorized-band band-edge) ................................................................... 42 A.5 Conducted Emissions ..........…

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