2BT26-AEROFITTrue Wireless Earbuds

Shenzhen Xingyi Electronic Materials Co., Ltd. Room 301, No. 22-1, Shadui Third Road, Shajing Community, Shajing Street, Bao’an District, Shenzhen, China Attestation Statements Not Covered Entity Applicant & Not Covered Equipment To: Federal Communications Commission Date: Jan. 26, 26 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(i) & (ii) FCC ID: 2BT26-AEROFIT Shenzhen Xingyi Electronic Materials 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, established pursuant to § 1.50002 of reference chapter, as an entity producing “covered” communication equipment. The equipment for which authorization is sought is not “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List that prohibited from receiving an equipment authorization pursuant to section § 2.903 of the FCC rules. Sincerely yours, Applicant Signature Printed Name: Huang Xiaogui Title: Manager Address: Room 301, No. 22-1, Shadui Third Road, Shajing Community, Shajing Street, Bao’an District, Shenzhen, China Tel.: 18038156571 Email: [email protected]

Shenzhen Xingyi Electronic Materials Co., Ltd. Room 301, No. 22-1, Shadui Third Road, Shajing Community, Shajing Street, Bao’an District, Shenzhen, China 1 | P a g e Attestation Statements To: Federal Communications Commission Date: Jan. 26, 26 7435 Oakland Mills Road, Columbia, MD 21046, USA Subject: Attestation of Compliance with FCC Covered List Software Requirements FCC ID: 2BT26-AEROFIT Product Name: True Wireless Earbuds This letter serves as an attestation that the equipment identified above ☐ is / ☒ is not (select one) "covered" software as defined under the Federal Communications Commission (FCC) Covered List requirements, as outlined in FCC 22-84 and KDB 986446. Specifically, the undersigned certifies that the equipment for which authorization is sought: 1. Does not contain cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors, assignees, parents, subsidiaries, affiliates, or any entity that has rebranded or relabeled software produced by the aforementioned entities. 2. Does not have the capability to store, run, or deliver any software identified on the FCC Covered List, including but not limited to cybersecurity and anti-virus software. To support this attestation, the appendix evaluation documentation has been prepared and is included in the certification filing. This attestation is based on a thorough evaluation of the device's design, functionality, and software environment. The undersigned affirms that the information provided is accurate and complete to the best of their knowledge. Sincerely yours, Applicant Signature Printed Name: Huang Xiaogui Title: Manager Address: Room 301, No. 22-1, Shadui Third Road, Shajing Community, Shajing Street, Bao’an District, Shenzhen, China Tel.: 18038156571 Email: [email protected] Shenzhen Xingyi Electronic Materials Co., Ltd. Room 301, No. 22-1, Shadui Third Road, Shajing Community, Shajing Street, Bao’an District, Shenzhen, China 2 | P a g e Evaluation regarding to the Covered List Software: Compliance Methodology Evaluation Process Results Device is Inherent compliance ☒ The Chipset(s) used is limited to run the Cybersecurity or anti-virus software. Compliance ☒ The Memory used is limited to run the Cybersecurity or anti-virus software. Compliance ☒ There is storage capacity limitation for store or install the Cybersecurity or anti-virus software. Compliance ☒ Operating system used is limited to run, install or deliver the Cybersecurity or anti-virus software. Compliance Device is not Inherent compliance ☐ Evaluation Based on Software Bill of Materials (SBoM) See attached “SBoM“ Note:The SBoM content is limited to the scope of covered list software (e.g. antivirus and cybersecurity software). ☐ Evaluation Based on Scan for Software on the device ☐ Evaluation Based on Filesystem scan ☐ Evaluation Based on Running software check

Shenzhen Xingyi Electronic Materials Co., Ltd. Room 301, No. 22-1, Shadui Third Road, Shajing Community, Shajing Street, Bao'an District, Shenzhen, China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2026-1-23 U.S. Agent Designation Shenzhen Xingyi Electronic Materials Co., Ltd. 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: 2BT26-AEROFIT): Name and company of U.S. agent: GLOCERTS TECHNOLOGY INC Physical U.S. address of agent: 19784 SUNKISSED RIDGE DR, RIVERSIDE, CA 92507 FRN of U.S. agent: 0036339737 GLOCERTS TECHNOLOGY INC acknowledges their obligation to accept service of process on behalf of Shenzhen Xingyi Electronic Materials Co., Ltd. Shenzhen Xingyi Electronic Materials Co., Ltd. with the FRN 0037825262 accepts its obligation to maintain an agent for service of process in the United States for no less than 1 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. Sincerely, Signature Signature Xiaogui Huang Huiying Fan Manager Te l : 18038156571 Email: [email protected] Director Tel: (626) 588-8039 Email: [email protected] Shenzhen Xingyi Electronic Materials Co., Ltd. GLOCERTS TECHNOLOGY INC

Shenzhen Xingyi Electronic Materials Co., Ltd. Room 301, No. 22-1, Shadui Third Road, Shajing Community, Shajing Street, Bao’an District, Shenzhen, China Date: 2026/1/26 Dear Sir/Madam, We, Shenzhen Xingyi Electronic Materials Co., Ltd., Hereby declares the following statement, PCB board, circuit, structure and internal of these model(s) are the same, Only model number is different for these model: Product name: True Wireless Earbuds FCC ID: 2BT26-AEROFIT Model no.: Fire-Boltt Aero Fit, FirePods Aero Fit Sincerely, Name/Title： Huang Xiaogui / Manager Company: Shenzhen Xingyi Electronic Materials Co., Ltd. Address: Room 301, No. 22-1, Shadui Third Road, Shajing Community, Shajing Street, Bao’an District, Shenzhen, China Phone: 18038156571 Fax: N/A E-Mail: [email protected]

Shenzhen Xingyi Electronic Materials Co., Ltd. Room 301, No. 22-1, Shadui Third Road, Shajing Community, Shajing Street, Bao’an District, Shenzhen, China January 26, 2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request for: FCC ID: 2BT26-AEROFIT Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request permanent confidential treatment of the exhibits accompanying this certification application as outlined below : ⎯ Block Diagram ⎯ Schematics ⎯ Operational Description The above exhibits contain trade secrets and/or proprietary information that are not publicly available and materials that the Applicant has spent considerable efforts in developing. Public disclosure of these may be harmful to the Applicant and give an unfair advantage to competitors on the market. Pursuant to DA 04-1705, the applicant also requests temporary confidential treatment of the exhibits outlined below for a period of 45 days from the date of equipment authorization and prior to marketing in the United States to prevent the premature release of any sensitive information. Applicant is aware of their responsibility to notify DERYCOM in the event information regarding the product or the product is made available to the public before the requested period has expired. ⎯ User Manual ⎯ Internal Photos Sincerely, Title: Manager Address: Room 301, No. 22-1, Shadui Third Road, Shajing Community, Shajing Street, Bao’an District, Shenzhen, China Tel.: 18038156571 Email: [email protected]

Shenzhen Xingyi Electronic Materials Co., Ltd. Room 301, No. 22-1, Shadui Third Road, Shajing Community, Shajing Street, Bao’an District, Shenzhen, China January 26, 2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization for FCC ID: 2BT26-AEROFIT I, the undersigned, hereby authorize Shenzhen Tongzhou Testing Co.,Ltd. to act on our behalf in all matters relating to this application for equipment certification. Any act carried out by Shenzhen Tongzhou Testing Co.,Ltd. shall have the same effect as our own and I acknowledge that all responsibility for complying with the terms and conditions of certification, as specified by DERYCOM CERTIFICATION SERVICES, INC., still resides with Shenzhen Xingyi Electronic Materials Co., Ltd.. We certify that we are not subject to a denial of federal benefits that includes FCC benefits pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. §862, and that no party to the application, as defined in 47 CFR §1.2002(b), is subject to a denial of federal benefits that includes FCC benefits pursuant to that section. Sincerely, Huang Xiaogui Manager Tel: 18038156571 Fax: N/A Email: [email protected]

Report No.: TZ0032260105PH02 Page 1 of 5 Exterior Photographs of EUT Figure 1 Figure 2 Report No.: TZ0032260105PH02 Page 2 of 5 Figure 3 Figure 4 Report No.: TZ0032260105PH02 Page 3 of 5 Figure 5 Figure 6 Report No.: TZ0032260105PH02 Page 4 of 5 Figure 7 Figure 8 Report No.: TZ0032260105PH02 Page 5 of 5 Figure 9

The size of the label is 15mm*10mm with White forecolor. The size of the logo is 5mm*5mm. Label Location The product does not have enough space to place the label, and FCC ID is located in the user manual and package. User manual as below: Package as below: FCC ID: 2BT26-AEROFIT

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BT26-AEROFIT This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 2 RADIO FREQUENCY EXPOSURE Limit According to section B.4 of 447498 D04 Interim General RF Exposure Guidance v01 SAR-based thresholds are derived based on frequency, power, and separation distance of the RF source. The formula defines the thresholds in general for either available maximum time-averaged power or maximum time-averaged ERP, whichever is greater. If the ERP of a device is not easily determined, such as for a portable device with a small form factor, the applicant may use the available maximum time-averaged power exclusively if the device antenna or radiating structure does not exceed an electrical length of λ/4. As for devices with antennas of length greater than λ/4 where the gain is not well defined, but always less than that of a half-wave dipole (length λ/2), the available maximum time-averaged power generated by the device may be used in place of the maximum time-averaged ERP, where that value is not known. The separation distance is the smallest distance from any part of the antenna or radiating structure for all persons, during operation at the applicable ERP. In the case of mobile or portable devices, the separation distance is from the outer housing of the device where it is closest to the antenna. The SAR-based exemption formula of § 1.1307(b)(3)(i)(B), repeated here as Formula (B.2), applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power or effective radiated power (ERP), whichever is greater, of less than or equal to the threshold Pth (mW). This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by Formula (B.2). Where and f is in GHz, d is the separation distance (cm), and ERP 20cm is per Formula (B.1). Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BT26-AEROFIT This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 2 Results RF Exposure at Separation distance (cm): 0.5 Mode Antenna Frequency [MHz] Conducted Power [dBm] Manufacturing tolerance Antenna Gain [dBi] Max of ERP and Conducted Power including Tune Up SAR-based exemption threshold Pth [mW] Target Power [dBm] Tolerance ±[dB] [dBm] [mW] DH5 Ant1 2402 -0.81 -1.5 1 1.7 -0.5 0.89 2.79 DH5 Ant1 2441 -0.76 -1.5 1 1.7 -0.5 0.89 2.75 DH5 Ant1 2480 -1.74 -2 1 1.7 -1 0.79 2.72 2DH5 Ant1 2402 -0.08 -0.5 1 1.7 0.5 1.12 2.79 2DH5 Ant1 2441 -0.13 -0.5 1 1.7 0.5 1.12 2.75 2DH5 Ant1 2480 -1.2 -1.5 1 1.7 -0.5 0.89 2.72 3DH5 Ant1 2402 0.48 0 1 1.7 1 1.26 2.79 3DH5 Ant1 2441 0.39 0 1 1.7 1 1.26 2.75 3DH5 Ant1 2480 -0.65 -1 1 1.7 0 1.00 2.72 Max of ERP and Conducted Power including Tune Up (dBm) = Max Conducted Tune Up Power(dBm) and Max Conducted Tune Up Power(dBm) + Antenna Gain(dBi)-2.15), whichever is greater. The Maximum Erp is used for Routine Evaluation Exemption according to B.4 of 447498 D04 Interim General RF Exposure Guidance v01. So, the SAR evaluation is not required.

2.4GHz 2012 Chip Antenna: RANT2012F245X07 Dimension(mm) L2.05+-0.10 W1.20+-0.10 T0.65+-0.10 No.TerminalName 1Feeding/GNG 2GND Application: WLAN,802.11b/g,Bluetooth,WLAN,etc... Features SMD,highreliability,ultraImpact,Omni-directional... PartnumberInformation RANT2012F245X07 (A)(B)(C)(D)(E)(F) (A)ProductTypeChipAntenna (B)SizeCode2.0x1.2mm(+-0.2mm) (C)MaterialHighKmaterial (D)Frequency2.4~2.5GHz (E)FeedingmodePIFA&SingleFeeding (F)AntennatypeType=07 ElectricalSpecification WorkingFrequencyRange2400~2484MHz Bandwidth84(Min.) PeakGain1.7dBi(Typ.) Impedance50Ohm Returnloss10dB(Min) PolarizationLinear AzimuthBeamwidthOmni-directional OperationTemperature( °C )-40~85 °C ResistancetoSolderingHeats 10sec.(@280°C) TerminationNi/Au(Leadless) ThespecificationisdefinedonEVB. DimensionandTerminalConfiguration 咏成國際科技有限公司電話 :13530576606 RAINInternationalTechnologyCo.,Ltd. 7/F,BuildingF,ZhichuangPark,Tong'an,Gushu,Shenzhen 2.4GHz 2012 Chip Antenna: RANT2012F245X07 EvaluationBoardReference PCBDimensionAntennaLayoutReferenceUnit:mm ElectricalCharacteristics ReturnLoss ReturnLoss&Radiation 1 Frequency(MHz) S11(dB) 2400-10.77 2450-24.81 2484-10.243 Radiation Z Y X 2400MHz2450MHz2500MHz Efficiency70.56%75.25%71.01% 2.4GHz 2012 Chip Antenna: RANT2012F245X07 TapingSpecifications ReelandTapingSpecification ReelSpecification TYPESIZEABCD 20127”5K/Reel 9.0±0.5 60±213.5±0.5178±2 TappingSpecification PackagingTypeABWEFGHTDP PaperType2012 1.50±0.202.30±0.208.0±0.201.75±0.103.5±0.054.0±0.102.0±0.050.75±0.101.57±0.104.0±0.1 ReliabilityTabl 2.4GHz 2012 Chip Antenna: RANT2012F245X07 e TestItemProcedure Requirements CeramicType Remark (Reference) Electrical Characterization Fulfilltheelectrical specification UserSpec. Thermal Shock 1.Preconditioning: 50±10°C/1hr,thenkeepfor24±1hrsatroomtemp. 2.Initialmeasure:Spec:referInitialspec. 3.Rapidchangeoftemperaturetest: -30°Cto+85°C;100cycles; 15minutesatLowercategorytemperature; 15minutesatUppercategorytemperature. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 107 Temperature Cycling 1.Initialmeasure:Spec:referInitialspec. 2.100Cycles(-30°Cto+85°C),SoakMode=1(2Cycle/hours). 3.Measurementat24±2Hoursaftertestcondition. NoVisibleDamage. Fulfilltheelectrical specification. JESD22 JA104 HighTemperature Exposure 1.Initialmeasure:Spec:referInitialspec. 2.Unpowered;500hours@T=+85°C. 3.Measurementat24±2hoursaftertest. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 108 LowTemperature Storage 1.Initialmeasure:Spec:referInitialspec. 2.Unpowered:500hours@T=-30°C. 3.Measurementat24±2hoursaftertest. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 108 Solderability (SMDBottomSide) Dippingmethod: a.Temperature:235±5°C b.Dippingtime:3±0.5s Thesoldershouldcover over95%ofthecritical areaofbottomside. IEC60384-21/22 4.10 SolderingHeat Resistance (RSH) Preheatingtemperature:150±10°C. Preheatingtime:1~2min. Soldertemperature:260±5°C. Dippingtime:5±0.5s NoVisibleDamage.IEC60384-21/22 4.10 Vibration5g'sfor20min.,12cycleseachof3orientations Note:Use8"X5"PCB.031"thick7securepointson,onelong sideand2securepointsatcornersofoppositesides.Parts mountedwithin2"fromanysecurepoint.Testfrom10-2000 Hz. NoVisibleDamage.MIL-STD-202 Method204 Mechanical Shock Threeshocksineachdirectionshallbeappliedalongthethree mutuallyperpendicularaxesofthetestspecimen(18shocks) Peakvalue:1,500g’s Duration:0.5ms Velocitychange:15.4ft/s Waveform:Half-sine NoVisibleDamage.MIL-STD-202 Method213 Humidity Bias 1.Humidity:85%R.H.,Temperature:85±2°C. 2.Time:500±24hours. 3.Measurementat24±2hrsaftertestcondition. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 Method106 2.4GHz 2012 Chip Antenna: RANT2012F245X 2.4GHz 2012 Chip Antenna: RANT2012F245X07 07 _ Board Flex (SMD) 1.Mountingmethod: IR-Reflow.PCBSize(L:100×W:40×T:1.6mm) 2.Applytheloadindirectionofthearrowuntilbendingreaches 2mm. NoVisibleDamage.AEC-Q200 005 AdhesionForceof1.8Kgfor60seconds.NoVisibleDamage Magnificationof20Xor greatermaybeemployed forinspectionofthe mechanicalintegrityofthe devicebodyterminalsand body/terminaljunction. AEC-Q200 006 Physical Dimension Anyapplicablemethodusingx10magnification,micrometers, calipers,gauges,contourprojectors,orothermeasuring equipment,capableofdeterminingtheactualspecimen dimensions. Inaccordancewith specification. JESD22 JB100 RevisionHistory RevisionDateContent 1NewDatashee2022/10/15t

Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 1 of 56 Appendix Test Data for BT(BDR/EDR) (Conducted Measurement) Product Name: True Wireless Earbuds Trade Mark: / Test Model: Fire-Boltt Aero Fit FCC ID: 2BT26-AEROFIT Environmental Conditions Temperature: 23.5°C Relative Humidity: 58% ATM Pressure: 100.0 kPa Test Engineer: Allen Lai Supervised by: Max Zhang NOTE N/A Appendix A: 20dB Emission Bandwidth Test Result Test Mode Antenna Frequency [MHz] 20db EBW [MHz] FL [MHz] FH [MHz] Limit [MHz] Verdict DH5 Ant1 2402 0.957 2401.523 2402.480 --- --- DH5 Ant1 2441 0.960 2440.526 2441.486 --- --- DH5 Ant1 2480 0.954 2479.529 2480.483 --- --- 2DH5 Ant1 2402 1.281 2401.361 2402.642 --- --- 2DH5 Ant1 2441 1.317 2440.331 2441.648 --- --- 2DH5 Ant1 2480 1.281 2479.361 2480.642 --- --- 3DH5 Ant1 2402 1.293 2401.352 2402.645 --- --- 3DH5 Ant1 2441 1.287 2440.358 2441.645 --- --- 3DH5 Ant1 2480 1.299 2479.346 2480.645 --- --- Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 2 of 56 Test Graphs DH5-Ant1-2402 DH5-Ant1-2441 Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 3 of 56 DH5-Ant1-2480 2DH5-Ant1-2402 Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 4 of 56 2DH5-Ant1-2441 2DH5-Ant1-2480 Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 5 of 56 3DH5-Ant1-2402 3DH5-Ant1-2441 Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 6 of 56 3DH5-Ant1-2480 Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 7 of 56 Appendix B: Occupied Channel Bandwidth Test Result Test Mode Antenna Frequency [MHz] OCB [MHz] FL [MHz] FH [MHz] Limit [MHz] Verdict DH5 Ant1 2402 0.87283 2401.5539 2402.4267 --- --- DH5 Ant1 2441 0.86372 2440.5583 2441.4220 --- --- DH5 Ant1 2480 0.86783 2479.5558 2480.4236 --- --- 2DH5 Ant1 2402 1.1831 2401.4015 2402.5846 --- --- 2DH5 Ant1 2441 1.1756 2440.4018 2441.5774 --- --- 2DH5 Ant1 2480 1.1786 2479.4035 2480.5821 --- --- 3DH5 Ant1 2402 1.1651 2401.4130 2402.5781 --- --- 3DH5 Ant1 2441 1.1760 2440.4080 2441.5840 --- --- 3DH5 Ant1 2480 1.1643 2479.4130 2480.5773 --- --- Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 8 of 56 Test Graphs DH5-Ant1-2402 DH5-Ant1-2441 Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 9 of 56 DH5-Ant1-2480 2DH5-Ant1-2402 Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 10 of 56 2DH5-Ant1-2441 2DH5-Ant1-2480 Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 11 of 56 3DH5-Ant1-2402 3DH5-Ant1-2441 Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 12 of 56 3DH5-Ant1-2480 Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 13 of 56 Appendix C: Maximum peak conducted output power Test Result Test Mode Antenna Frequency [MHz] Conducted Peak Power [dBm] Conducted Limit [dBm] Verdict DH5 Ant1 2402 -0.81 ≤30 PASS DH5 Ant1 2441 -0.76 ≤30 PASS DH5 Ant1 2480 -1.74 ≤30 PASS 2DH5 Ant1 2402 -0.08 ≤20.97 PASS 2DH5 Ant1 2441 -0.13 ≤20.97 PASS 2DH5 Ant1 2480 -1.20 ≤20.97 PASS 3DH5 Ant1 2402 0.48 ≤20.97 PASS 3DH5 Ant1 2441 0.39 ≤20.97 PASS 3DH5 Ant1 2480 -0.65 ≤20.97 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 14 of 56 Test Graphs DH5-Ant1-2402-PASS DH5-Ant1-2441-PASS Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 15 of 56 DH5-Ant1-2480-PASS 2DH5-Ant1-2402-PASS Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 16 of 56 2DH5-Ant1-2441-PASS 2DH5-Ant1-2480-PASS Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 17 of 56 3DH5-Ant1-2402-PASS 3DH5-Ant1-2441-PASS Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 18 of 56 3DH5-Ant1-2480-PASS Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 19 of 56 Appendix D: Carrier frequency separation Test Result Test Mode Antenna Frequency [MHz] Result [MHz] Limit [MHz] Verdict DH5 Ant1 Hop 1.012 ≥0.960 PASS 2DH5 Ant1 Hop 1.198 ≥0.878 PASS 3DH5 Ant1 Hop 0.99 ≥0.866 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 20 of 56 Test Graphs DH5-Ant1-Hop-PASS 2DH5-Ant1-Hop-PASS Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 21 of 56 3DH5-Ant1-Hop-PASS Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 22 of 56 Appendix E: Time of occupancy Test Result Test Mode Antenna Frequency [MHz] Burst Width [ms] TotalHops [Num] Result [s] Limit [s] Verdict DH5 Ant1 Hop 2.908 90 0.262 ≤0.4 PASS 2DH5 Ant1 Hop 2.915 80 0.233 ≤0.4 PASS 3DH5 Ant1 Hop 2.917 120 0.35 ≤0.4 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 23 of 56 Test Graphs DH5-Ant1-Hop-PASS Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 24 of 56 2DH5-Ant1-Hop-PASS Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 25 of 56 3DH5-Ant1-Hop-PASS Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 26 of 56 Appendix F: Number of hopping channels Test Result Test Mode Antenna Frequency [MHz] Result [Num] Limit [Num] Verdict DH5 Ant1 Hop 79 ≥15 PASS 2DH5 Ant1 Hop 79 ≥15 PASS 3DH5 Ant1 Hop 79 ≥15 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 27 of 56 Test Graphs DH5-Ant1-Hop-PASS 2DH5-Ant1-Hop-PASS Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 28 of 56 3DH5-Ant1-Hop-PASS Appendix Test Data of the Report No.: TZ0032260105FRF01 Page 29 of 56 Appendix G: Band edge measurements Test Result Test Mode Antenna Ch.Name Frequency [MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 Low 2402 -1.45 -49.14 ≤-21.45 PASS DH5 Ant1 High 2480 -2.44 -47.47 ≤-22.44 PASS DH5 Ant1 Low Hop_2402 -1.47 -48.61 ≤-21.47 PASS DH5 Ant1 High Hop_2480 -2.86 -47.66 ≤-22.86 PASS 2DH5 Ant1 Low 2402 -2.19 -48.76 ≤-22.19 PASS 2DH5 Ant1 High 2480 -2.56 -47.52 …

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Report No.: TZ0032260105FRF01 Page 1 of 35 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Tongzhou Testing Co.,Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Tongzhou Testing Co.,Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. The test report apply only to the specific sample(s) tested under stated test conditions. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. TEST REPORT Report Number : TZ0032260105FRF01 Product Name : True Wireless Earbuds Model/Type reference : Fire-Boltt Aero Fit, FirePods Aero Fit FCC ID : 2BT26-AEROFIT Prepared for : Shenzhen Xingyi Electronic Materials Co., Ltd. 301 Room 301, No. 22-1, Shadui Third Road, Shajing Community, Shajing Street, Bao’an District, Shenzhen, China Prepared By : Shenzhen Tongzhou Testing Co.,Ltd. 1st Floor, Building 1, Haomai High-tech Park, Huating Road 387, Dalang Street, Longhua, Shenzhen, China Standards : FCC CFR Title 47 Part 15C, ANSI C63.10-2020 Date of Test : 2026-01-19 ~ 2026-01-24 Date of Issue : 2026-01-24 Prepared by : Nancy Li Reviewed by : Allen Lai Approved by : Max Zhang (Authorized Officer) Report No.: TZ0032260105FRF01 Page 2 of 35 ** Report Revise Record ** Report Version Revise Time Issued Date Valid Version Notes V1.0 / 2026-01-24 Valid Initial release Report No.: TZ0032260105FRF01 Page 3 of 35 TABLE OF CONTENTS 1. G E N E R A L I N F O R M A T I O N ....................................................... 4 1.1. Client Information ................................................................................................................... 4 1.2. Description of Device (EUT) ................................................................................................... 4 1.3. Wireless Function Tested in this Report .............................................................................. 4 1.4. EUT configuration ................................................................................................................... 5 1.5. Description of Test Facility .................................................................................................... 5 1.6. Statement of the Measurement Uncertainty ......................................................................... 5 1.7. Measurement Uncertainty ...................................................................................................... 6 1.8. Description of Test Modes ..................................................................................................... 6 1.9. Frequency of Channels .......................................................................................................... 6 2. T E S T M E T H O D O L O G Y ............................................................ 7 2.1. EUT Configuration .................................................................................................................. 7 2.2. EUT Exercise ........................................................................................................................... 7 2.3. Test Sample ............................................................................................................................. 7 3. S Y S T E M T E S T C O N F I G U R A T I O N .............................................. 8 3.1. Justification ............................................................................................................................. 8 3.2. EUT Exercise Software ........................................................................................................... 8 3.3. Special Accessories ............................................................................................................... 8 3.4. Block Diagram/Schematics .................................................................................................... 8 3.5. Equipment Modifications ....................................................................................................... 8 3.6. Test Setup ................................................................................................................................ 8 4. S U M M A R Y O F T E S T R E S U L T S ................................................. 9 5. M E A S U R E M E N T R E S U L T S .................................................... 10 5.1. Maximum Peak Conducted Output Power ......................................................................... 10 5.2. Frequency Separation and 20 Db Bandwidth .................................................................... 11 5.3. Number of Hopping Frequency ........................................................................................... 12 5.4. Time of Occupancy (Dwell Time) ......................................................................................... 13 5.5. Conducted Spurious Emissions and Band Edges Test .................................................... 15 5.6. Restricted Band Emission Limit .......................................................................................... 16 5.7. AC Power line conducted emissions .................................................................................. 26 5.8. Band-edge measurements for radiated emissions ........................................................... 29 5.9. Pseudorandom frequency hopping sequence ................................................................... 32 5.10. Antenna requirement ............................................................................................................ 33 6. S U M M A R Y O F T E S T E Q U I P M E N T ........................................... 34 7. T E S T S E T U P P H O T O G R A P H S ................................................ 35 8. E X T E R N A L P H O T O S O F T H E…

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Report No.: TZ0032260105PH01 Page 1 of 2 Test Setup Photos of the EUT Radiated Emission Below 1GHz Radiated Emission Above 1GHz Report No.: TZ0032260105PH01 Page 2 of 2 Conducted Emission