2BDZ6T302TWS wireless Bluetooth earbuds

31 INTERNATIONALBUSINESSPARK#03-01SINGAPORE609921TEL: (65) 6895 4000FAX:(65) 6895 4999COMPANYREGNO:199905094R UNITEDSTATES DESIGNATED AGENT LETTER Date:2023-12-14 TO:Federal CommunicationCommission EquipmentAuthorizationBranch 7435 OaklandMillsRoad Columbia,MID 21046 ApplicantU.S.designatedagent CompanyName:LovepacTechnology (Shenzhen)Co.,Ltd CompanyName:UnitedConsultingTechnology ServicesCo.,Ltd. GranteeCode:2BDZ6FRN0033495714 ContactName:xiaochaoZhuContactName:DavidWu Address:1F,No.3Building,No.1Lirong Road,Dalang Street, Longhua District,Shenzhen Guang dong 518109China Address:17800CASTLETONSTSTE 665 CITYOF INDUSTRYCA 91748 United States City/Province/Zip:City/Province/Zip: Telephone:0755-21008157Telephone:(626)217-4022 Fax:0755-86102511Fax: Email:[email protected]:[email protected] ApplicableEquipment:FCCID: 2BDZ6T302 ATTN:Directorof Certification: We, Lovepac Technology (Shenzhen)Co., Ltd andUnitedConsulting Technology ServicesCo., Ltd. understand and acknowledge the applicants consent and the designated agent’s obligationto accept serviceof processin the UnitedStatesfor matters relatedto the applicableequipment, and at the physicalU.S.address and e-mailofthe designated agentlistedabove. We , Lovepac Technology (Shenzhen)Co., Ltd andUnitedConsulting Technology ServicesCo., Ltd. ac knowledge the applicant’s acceptanceof its obligationto maintain an agent forserviceof processin the UnitedStates for no less than one year after either the grantee has permanently terminated all marketing and importationofthe applicable equipmentwithinthe U.S.,orthe conclusionof any Commission-related administrativeorjudicialproceedinginvolvingthe equipment, whicheveris later. ApplicantU.S.designatedagent Name(Printed):xiaochaoZhuName(Printed): DavidWu Title:qualityengineerTitle:CEO Signature:Signature:

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A02 Rev.A/0 Page: 1 of 8 Appendix External Photos for SZCR2311003641AT FCC ID:2BDZ6T302 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A02 Rev.A/0 Page: 2 of 8 EUT Constructional Details (EUT Photos) Model: Lagom SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A02 Rev.A/0 Page: 3 of 8 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A02 Rev.A/0 Page: 4 of 8 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A02 Rev.A/0 Page: 5 of 8 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A02 Rev.A/0 Page: 6 of 8 Model: Bang SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A02 Rev.A/0 Page: 7 of 8 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A02 Rev.A/0 Page: 8 of 8 - End of the Appendix -

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A03 Rev.A/0 Page: 1 of 12 Appendix Internal Photos for SZCR2311003641AT FCC ID:2BDZ6T302 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A03 Rev.A/0 Page: 2 of 12 EUT Constructional Details (EUT Photos) Model: Lagom SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A03 Rev.A/0 Page: 3 of 12 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A03 Rev.A/0 Page: 4 of 12 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A03 Rev.A/0 Page: 5 of 12 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A03 Rev.A/0 Page: 6 of 12 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A03 Rev.A/0 Page: 7 of 12 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A03 Rev.A/0 Page: 8 of 12 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A03 Rev.A/0 Page: 9 of 12 Model: Bang SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A03 Rev.A/0 Page: 10 of 12 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A03 Rev.A/0 Page: 11 of 12 Antenna Location: SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A03 Rev.A/0 Page: 12 of 12 - End of the Appendix -

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZSAR-TRF-01 Rev. A/0 May15,2023 Report No.: SZCR231100364104 Page: 1 of 37 Keny Xu EMC Laboratory Manager FCC SAR TEST REPORT Application No.: SZCR2311003641AT Applicant: Lovepac Technology (Shenzhen) Co., Ltd Address of Applicant: 1F, No.3 Building, No.1 Lirong Road, Dalang Street, Longhua District, Shenzhen, Guang dong, 518109 China Manufacturer: Lovepac Technology (Shenzhen) Co., Ltd Address of Manufacturer: 1F, No.3 Building, No.1 Lirong Road, Dalang Street, Longhua District, Shenzhen, Guang dong, 518109 China Product Name: TWS wireless Bluetooth earbuds Model No.(EUT): Bang, Lagom   Please refer to section 2 of this report which indicates which model was actually tested and which were electrically identical. Trade mark: RÖtt KRÖN FCC ID: 2BDZ6T302 Standard(s) : FCC 47CFR §2.1093 Date of Receipt: 2023-11-27 Date of Test: 2023-11-28 Date of Issue: 2023-12-01 Test Result: Pass* * In the configuration tested, the EUT complied with the standards specified above. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZSAR-TRF-01 Rev. A/0 May15,2023 Report No.: SZCR231100364104 Page: 2 of 37 Revision Record Version Description Date Remark 00 Original 2023-12-01 / Authorized for issue by: Roman Pan/ Project Engineer Eric Fu / Reviewer SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZSAR-TRF-01 Rev. A/0 May15,2023 Report No.: SZCR231100364104 Page: 3 of 37 TEST SUMMARY Frequency Band Maximum Reported SAR(W/kg) Head BT 1.52 SAR Limited(W/kg) 1.6 Remark: Model No.: Bang, lagom Only the model Bang was tested in this report, since according to the declaration from the applicant, the electrical circuit design, PCB layout, components used, internal wiring and functions were identical for the earbuds as all the above models, with only difference on travel case. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZSAR-TRF-01 Rev. A/0 May15,2023 Report No.: SZCR231100364104 Page: 4 of 37 CONTENTS 1 GENERAL INFORMATION .............................................................................................................................. 6 1.1 GENERAL DESCRIPTION OF EUT .................................................................................................................. 6 1.2 DUT ANTENNA LOCATIONS .......................................................................................................................... 7 1.3 TEST SPECIFICATION ................................................................................................................................... 8 1.4 RF EXPOSURE LIMITS .................................................................................................................................. 9 1.5 TEST LOCATION ........................................................................................................................................ 10 1.6 TEST FACILITY .......................................................................................................................................... 10 2 LABORATORY ENVIRONMENT ................................................................................................................... 11 3 SAR MEASUREMENTS SYSTEM CONFIGURATION .................................................................................. 12 3.1 THE SAR MEASUREMENT SYSTEM ............................................................................................................ 12 3.2 ISOTROPIC E-FIELD PROBE EX3DV4 ......................................................................................................... 14 3.3 DATA ACQUISITION ELECTRONICS (DAE) ................................................................................................... 15 3.4 SAM TWIN PHANTOM ................................................................................................................................ 15 3.5 ELI PHANTOM ........................................................................................................................................... 16 3.6 DEVICE HOLDER FOR TRANSMITTERS ......................................................................................................... 17 3.7 MEASUREMENT PROCEDURE ...................................................................................................................... 18 3.7.1 Scanning procedure ........................................................................................................................... 18 3.7.2 Data Storage ...................................................................................................................................... 20 3.7.3 Data Evaluation by SEMCAD ............................................................................................................. 20 4 SAR MEASUREMENT VARIABILITY AND UNCERTAINTY ........................................................................ 22 4.1 SAR MEASUREMENT VARIABILITY ............................................................................................................... 22 4.2 SAR MEASUREMENT UNCERTAINTY ............................................................................................................ 23 5 DESCRIPTION OF TEST POSITION ............................................................................................................. 24 5.1 THE TEST POSITION .................................................................................................................................. 24 6 SAR SYSTEM VERIFICATION PROCEDURE .............................................................................................. 25 6.1 TISSUE SIMULATE LIQUID ........................................................................................................................... 25 6.1.1 Recipes for Tissue Simulate Liquid ................................................................................................…

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TestingReport CustomerName:HongjiWirelessCommunication(Shenzhen)Co.,LTD ProductName:BTAntenna SampleModel:Oxhorn ReferenceStandard:GB/T9410-2008;ANSI/IEEEStd149-1979 IssueDate:2023.11.14 Engineer: Date: 2023.11.14 Auditor: Date: 2023.11.14 Approver: Date: 2023.11.14 1.GeneralInformation 1.1GeneralInformationoftestinginstitutions Name HongjiWirelessCommunication(Shenzhen)Co.,LTD Address 12/F,WestBlockB,Building8,HuaqiangScienceandTechnologyEcologicalPark,Guangming District,Shenzhen Tel 17841062058 E-mail [email protected] Equipm ent Agilent5071C 1.2Testingprinciple AntennaPhoto&Lenght(mm) 1.3Testequipment Equipment ModelNo.SerialNo.Manufacturer Calibration date Next calibration date 24probe microwave chamber 4*4*4NAXinyi2023.09.302023.12.31 Network Analyzer 5071CNA Agilent 2023.09.30 2023.12.31 1.4Testenvironment Temperature 24C±1.5C Humidity 45%RH Pressure 101kPa 1.5 BriefsummaryofProcedure 1.XinyiturnontheUpperComputerSoftware,Name:VeryView99.exe,VersionNo.:V1.10; 2.VeryView99viaGPIB(GeneralPurposeInterfaceBus)tocontroltheshieldingroom(darkroom)'sXinyi; 3.Meanwhiel,GPIBcontroltheAgilent5071CtoreadtheAntennadataby24Probe; 4.Agilent5071Cwillanalysethedataandgeneratetheresult; 5.Agilent5071CwillfeedbacktoVeryView99softwaretogeneratethetestreport. Xinyi Uppercomputer software GPIB Agilent 5071C 24Probe Xinyi Darkroom 2.SampleInformation 2.1Clientinformation Name HongjiWirelessCommunication(Shenzhen)Co.,LTD Address 12/F,WestBlockB,Building8,HuaqiangScienceandTechnologyEcologicalPark, GuangmingDistrict,Shenzhen Contacts Yangzhicheng Tel 17841062058 E-mail [email protected] 2.2DescriptionofEUT(S) ProductName BTAntenna SampleModel Oxhorn AntennaSize 3.2x1.6x0.5(mm) AntennaType Ceramicpatchantenna SerialNo. / TestItem AntennaGain,Radiationpattern FrequencyRange 2400-2500MHz ReceivedDate 2023.11.14 TestDate 2023.11.14 Remark ThelengthoftheRFcableis50mm Thetestphotos Testdata L FrequencyMHz Gain(dBi)Efficiency(dB)Efficiency（%） 2400 -2.24-8.1915.16 2410 -1.54-7.5617.53 2420 -0.98-6.9820.07 2430 -0.61-6.5322.21 2440 -0.26-6.1324.41 2450 -0.11-5.7226.78 2460 0.11-5.3629.11 2470 0.22-5.0731.10 2480 0.28-4.8832.54 2490 0.27-4.7333.68 2500 0.13-4.7333.65 AVG -0.57-6.2724.32 R FrequencyMHz Gain(dBi)Efficiency(dB)Efficiency（%） 2400 0.36-5.7125.34 2410 0.75-5.5525.14 2420 0.77-5.5526.12 2430 0.94-5.3827.48 2440 0.82-5.2627.60 2450 1.15-4.9429.25 2460 1.06-5.0530.72 2470 1.23-5.0330.82 2480 1.02-5.1129.47 2490 0.83-5.2728.73 2500 0.67-5.7228.41 AVG 0.90-5.2927.99

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 1 of 155 Keny Xu EMC Laboratory Manager TEST REPORT Application No.: SZCR2311003641AT Applicant: Lovepac Technology (Shenzhen) Co., Ltd Address of Applicant: 1F, No.3 Building, No.1 Lirong Road, Dalang Street, Longhua District, Shenzhen, Guang dong, 518109 China Manufacturer: Lovepac Technology (Shenzhen) Co., Ltd Address of Manufacturer: 1F, No.3 Building, No.1 Lirong Road, Dalang Street, Longhua District, Shenzhen, Guang dong, 518109 China Equipment Under Test (EUT): Product Name: TWS wireless Bluetooth earbuds Model No.(EUT): Bang, Lagom   Please refer to section 2 of this report which indicates which model was actually tested and which were electrically identical. Trade mark: RÖtt KRÖN FCC ID: 2BDZ6T302 Standard(s) : 47 CFR Part 15, Subpart C 15.247 Date of Receipt: 2023-11-13 Date of Test: 2023-11-15 to 2023-11-29 Date of Issue: 2023-12-04 Test Result: Pass* * In the configuration tested, the EUT complied with the standards specified above. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 2 of 155 Revision Record Version Chapter Date Modifier Remark 01 2023-12-04 Original Authorized for issue by: Benson Wang/Project Engineer Eric Fu/Reviewer SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 3 of 155 2 Test Summary Radio Spectrum Technical Requirement Item Standard Method Requirement Result Antenna Requirement 47 CFR Part 15, Subpart C 15.247 N/A 47 CFR Part 15, Subpart C 15.203 & 15.247(b)(4) Pass Other requirements Frequency Hopping Spread Spectrum System Hopping Sequence N/A 47 CFR Part 15, Subpart C 15.247(a)(1),(g),(h) Pass Radio Spectrum Matter Part Item Standard Method Requirement Result Conducted Peak Output Power 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 7.8.5 47 CFR Part 15, Subpart C 15.247(b)(1) Pass 20dB Bandwidth ANSI C63.10 (2013) Section 7.8.7 47 CFR Part 15, Subpart C 15.247(a)(1) Pass Carrier Frequencies Separation ANSI C63.10 (2013) Section 7.8.2 47 CFR Part 15, Subpart C 15.247a(1) Pass Hopping Channel Number ANSI C63.10 (2013) Section 7.8.3 47 CFR Part 15, Subpart C 15.247a(1)(iii) Pass Dwell Time ANSI C63.10 (2013) Section 7.8.4 47 CFR Part 15, Subpart C 15.247a(1)(iii) Pass Conducted Band Edges Measurement ANSI C63.10 (2013) Section 7.8.6 47 CFR Part 15, Subpart C 15.247(d) Pass Conducted Spurious Emissions ANSI C63.10 (2013) Section 7.8.8 47 CFR Part 15, Subpart C 15.247(d) Pass Radiated Emissions which fall in the restricted bands ANSI C63.10 (2013) Section 6.10.5 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Radiated Spurious Emissions Below 1GHz ANSI C63.10 (2013) Section 6.4,6.5 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Radiated Spurious Emissions Above 1GHz ANSI C63.10 (2013) Section 6.6 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Remark: Model No.: Bang, Lagom Only the model Lagom was tested in this report, since according to the declaration from the applicant, the electrical circuit design, PCB layout, components used, internal wiring and functions were identical for the earbuds as all the above models, with only difference on travel case. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 4 of 155 3 Contents Page 1 Cover Page ................................................................................................................................................ 1 2 Test Summary ........................................................................................................................................... 3 3 Contents .................................................................................................................................................... 4 4 General Information .................................................................................................................................. 6 4.1 Details of E.U.T. ................................................................................................................................. 6 4.2 Description of Support Units .............................................................................................................. 6 4.3 Measurement Uncertainty .................................................................................................................. 7 4.4 Test Location ...................................................................................................................................... 8 4.5 Test Facility ........................................................................................................................................ 8 4.6 Deviation from Standards ................................................................................................................... 8 4.7 Abnormalities from Standard Conditions ........................................................................................... 8 5 Equipment List .......................................................................................................................................... 9 6 Radio Spectrum Technical Requirement ............................................................................................. 13 6.1 Antenna Requirement ...................................................................................................................... 13 6.1.1 Test Requirement: ....................................................................................................................... 13 6.1.2 Conclusion ................................................................................................................................... 13 6.2 Other requirements Frequency Hopping Spread Spectrum System Hopping Sequence................ 14 6.2.1 Test Require…

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SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 109 of 155 For Left earbud: 1. Bandwidth 1.1 OBW 1.1.1 Test Result Mode TX Type Frequency (MHz) Packet Type ANT 99% Occupied Bandwidth (MHz) Verdict Result Limit GFSK SISO 2402 DH5 1 0.874 / Pass 2441 DH5 1 0.871 / Pass 2480 DH5 1 0.868 / Pass Pi/4DQPSK SISO 2402 2DH5 1 1.208 / Pass 2441 2DH5 1 1.208 / Pass 2480 2DH5 1 1.205 / Pass 8DPSK SISO 2402 3DH5 1 1.216 / Pass 2441 3DH5 1 1.211 / Pass 2480 3DH5 1 1.207 / Pass SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 110 of 155 1.1.2 Test Graph GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 111 of 155 GFSK_DH5_HCH_2480MHz_Ant1_NTNV Pi/4DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 112 of 155 Pi/4DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV Pi/4DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 113 of 155 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 114 of 155 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 115 of 155 1.2 20dB BW 1.2.1 Test Result Mode TX Type Frequency (MHz) Packet Type ANT 20dB Bandwidth (MHz) Verdict Result Limit GFSK SISO 2402 DH5 1 0.961 2400-2483.5 Pass 2441 DH5 1 0.960 2400-2483.5 Pass 2480 DH5 1 0.959 2400-2483.5 Pass Pi/4DQPSK SISO 2402 2DH5 1 1.360 2400-2483.5 Pass 2441 2DH5 1 1.359 2400-2483.5 Pass 2480 2DH5 1 1.363 2400-2483.5 Pass 8DPSK SISO 2402 3DH5 1 1.337 2400-2483.5 Pass 2441 3DH5 1 1.336 2400-2483.5 Pass 2480 3DH5 1 1.332 2400-2483.5 Pass SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 116 of 155 1.2.2 Test Graph GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 117 of 155 GFSK_DH5_HCH_2480MHz_Ant1_NTNV Pi/4DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 118 of 155 Pi/4DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV Pi/4DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 119 of 155 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 120 of 155 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 121 of 155 2. Maximum Conducted Output Power 2.1 Power 2.1.1 Test Result Mode TX Type Frequency (MHz) Packet Type Maximum Peak Conducted Output Power (dBm) Verdict ANT1 Limit GFSK SISO 2402 DH5 8.74 <=30 Pass 2441 DH5 8.52 <=30 Pass 2480 DH5 8.44 <=30 Pass Pi/4DQPSK SISO 2402 2DH5 8.47 <=20.97 Pass 2441 2DH5 8.32 <=20.97 Pass 2480 2DH5 8.26 <=20.97 Pass 8DPSK SISO 2402 3DH5 8.76 <=20.97 Pass 2441 3DH5 8.61 <=20.97 Pass 2480 3DH5 8.56 <=20.97 Pass Note1: Antenna Gain: Ant1: 0.28dBi; SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 122 of 155 3. Carrier Frequency Separation 3.1 Ant1 3.1.1 Test Result Ant1 Mode TX Type Frequency (MHz) Packet Type Channel Separation (MHz) 20dB Bandwidth (MHz) Limit (MHz) Verdict GFSK SISO HOPP DH5 1.000 0.961 >=0.961 Pass Pi/4DQPSK SISO HOPP 2DH5 1.003 1.363 >=0.909 Pass 8DPSK SISO HOPP 3DH5 1.001 1.337 >=0.891 Pass SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 123 of 155 3.1.2 Test Graph GFSK_DH5_HOPP_Ant1_NTNV Pi/4DQPSK_2DH5_HOPP_Ant1_NTNV SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 124 of 155 8DPSK_3DH5_HOPP_Ant1_NTNV SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 125 of 155 4. Number of Hopping Frequencies 4.1 HoppNum 4.1.1 Test Result Mode TX Type Frequency (MHz) Packet Type Num of Hopping Frequencies Verdict ANT1 Limit GFSK SISO HOPP DH5 79 >=15 Pass Pi/4DQPSK SISO HOPP 2DH5 79 >=15 Pass 8DPSK SISO HOPP 3DH5 79 >=15 Pass SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 126 of 155 4.1.2 Test Graph GFSK_DH5_HOPP_Ant1_NTNV Pi/4DQPSK_2DH5_HOPP_Ant1_NTNV SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 127 of 155 8DPSK_3DH5_HOPP_Ant1_NTNV SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR231100364102 Page: 128 of 155 5. Time of Occupancy (Dwell Time) 5.1 Ant1 5.1.1 Test Result Ant1 Mode TX Type Frequency (MHz) Packet Type Duration of Single Pulse (ms) Observation Period (s) Num of Pulse in Observation Period Dwell Time (ms) Limit (ms) Verdict GFSK SISO HOPP DH1 0.388 31.600 320 124.160 <=400 Pass DH3 1.658 31.600 167 276.886 <=400 Pass DH5 2.904 31.600 111 322.344 <=400 Pass Pi/4DQPSK SISO HOPP 2DH1 0.386 31.600 320 123.520 <=400 Pass 2DH3 1.656 31.600 160 264.960 <=400 Pass 2DH5 2.904 31.600 104 302.016 <=400 Pass 8DPSK SISO HOPP 3DH1 0.392 31.600 320 125.440 <=400 Pass 3DH3 1.642 31.600 165 270.930 <=400 Pass 3DH5 …

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Report No.: SZCR231100364104 Appendix A Detailed System Check Results 1. System Performance Check System Performance Check 2450 MHz Head Date: 2023/11/28 Test Laboratory: SGS-SAR Lab System Performance Check 2450MHz Head DUT: D2450V2; Type: Dipole; Serial: 733 Communication System: CW; Frequency: 2450 MHz;Duty Cycle: 1:1 Medium: HSL2450;Medium parameters used: f = 2450 MHz; σ = 1.817 S/m; ε r = 39.77; ρ = 1000 kg/m 3 Phantom section: Flat Section DASY 5 Configuration: Probe: EX3DV4 - SN3836; ConvF(7.3, 7.3, 7.3); Calibrated: 2023/8/7; Sensor-Surface: 1.4mm (Mechanical Surface Detection) Electronics: DAE4 Sn760; Calibrated: 2023/6/26 Phantom: SAM5; Type: SAM Twin; Serial: 1673 DASY52 52.8.4(1052); SEMCAD X 14.6.8(7028) Configuration/d=10mm, Pin=250mW/Area Scan (5x8x1): Measurement grid: dx=15mm, dy=15mm Maximum value of SAR (measured) = 20.6 W/kg Configuration/d=10mm, Pin=250mW/Zoom Scan (5x5x7)/Cube 0: Measurement grid: dx=8mm, dy=8mm, dz=5mm Reference Value = 90.469 V/m; Power Drift = 0.16 dB Peak SAR (extrapolated) = 28.4 W/kg SAR(1 g) = 13.4 W/kg; SAR(10 g) = 6.21 W/kg Maximum value of SAR (measured) = 23.0 W/kg 0 dB = 23.0 W/kg = 13.62 dBW/kg

Report No.: SZCR231100364104 Appendix B Detailed Test Results BT for Head Date: 2023/11/28 Test Laboratory: SGS-SAR Lab Left Bluetooth DH5 0CH Front side 0mm DUT: Bang; Type: TWS wireless Bluetooth earbuds; Serial: T3030013L220002 Communication System: Bluetooth; Frequency: 2402 MHz;Duty Cycle: 1:1 Medium: HSL2450;Medium parameters used: f = 2402 MHz; σ = 1.762 S/m; ε r = 40.044; ρ = 1000 kg/m 3 Phantom section: Flat Section DASY 5 Configuration: Probe: EX3DV4 - SN3836; ConvF(7.3, 7.3, 7.3); Calibrated: 2023/8/7; Sensor-Surface: 1.4mm (Mechanical Surface Detection) Electronics: DAE4 Sn760; Calibrated: 2023/6/26 Phantom: SAM5; Type: SAM Twin; Serial: 1673 DASY52 52.8.4(1052); SEMCAD X 14.6.8(7028) Configuration/Body/Area Scan (7x6x1): Measurement grid: dx=12mm, dy=12mm Maximum value of SAR (measured) = 1.48 W/kg Configuration/Body/Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm, dy=5mm, dz=5mm Reference Value = 22.972 V/m; Power Drift = -0.13 dB Peak SAR (extrapolated) = 2.31 W/kg SAR(1 g) = 0.894 W/kg; SAR(10 g) = 0.337 W/kg Maximum value of SAR (measured) = 1.71 W/kg 0 dB = 1.71 W/kg = 2.33 dBW/kg

Report No.: SZCR231100364104 Appendix C Calibration certificate 1. Dipole D2450V2-SN 733 2. DAE DAE4-SN 760 3. Probe EX3DV4-SN 3836

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A04 Rev.A/0 Page: 1 of 3 Appendix Test Setup Photos for SZCR2311003641AT FCC ID:2BDZ6T302 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A04 Rev.A/0 Page: 2 of 3 Test Setup Photo Radiated Spurious Emissions Below 1GHz Left earbuds Right earbuds SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A04 Rev.A/0 Page: 3 of 3 Radiated Spurious Emissions Above 1GHz Left earbuds Right earbuds - End of the Appendix -

Report No.: SZCR231100364104 Appendix D Photographs 1. SAR measurement System 2. Photographs of Tissue Simulate Liquid 3. Photographs of EUT test position 4. EUT Constructional Details Report No.: SZCR231100364104 1. SAR measurement System Report No.: SZCR231100364104 2. Photographs of Tissue Simulate Liquid Photo 1: Tissue Simulant Liquid for HBBL600-10000MHz NA NA Report No.: SZCR231100364104 3. Photographs of EUT test position Left earbuds: Photo 2: Front side 0mm Photo 3: touch cheek 0mm Photo 4: Left side 0mm Photo 5: Right side 0mm Photo 6: Top side 0mm Photo 7: Bottom side 0mm Report No.: SZCR231100364104 Right earbuds: Photo 8: Front side 0mm Photo 9: touch cheek 0mm Photo 10: Left side 0mm Photo 11: Right side 0mm Photo 12: Top side 0mm Photo 13: Bottom side 0mm Report No.: SZCR231100364104 4. EUT Antenna Locations Report No.: SZCR231100364104 5. EUT Constructional Details Details please Refer to Appendix – Photographs of EUT Constructional Details for SZCR2311003641AT.