2BBPLTBRTVNTPHVOICE PHONE WITH WIRELESS SPEAKER

Section Company n Address: 13 Product Na FCCID: 2B Model(s): T 2.911(d)(5 ) We, [TRU S is sought th  Pro  Ide n Yours sinc e Name: Mar Title: CEO Company n Signature: NOTE 1 “Covered List https://www.f c References; 1) 986446 D 0 https://apps.fc 2) Federal R e https://www.fe munications-s 2.911(d) name: TRUS 370 Broadw ame: VOICE BPLTBRTV TB-RTVNTP )(i) Equipm STSTONE G hrough certi hibited from ntified as an erely, rc Faham name: TRUS ”; is the List o cc.gov/supplyc 01 Covered Eq cc.gov/oetcf/kd egister docume ederalregister. supply-chain-t TR )(5)(i) Ce STSTONE way 9th floo E PHONE W VNTPH PH, TB-RTV mentType GROUP, LLC ification is n m receiving n equipmen STSTONE of Equipment a chain/covered quipment v01 db/forms/FTS ent 2022-2826 gov/documen hrough-the RUSTSTO ertificatio GROUP, LL or, New York WITH WIRE VNTPH-BLU C] (“the app not: an equipm e nt type in the GROUP, L L and Services C list SearchResul t 63 published o nts/2023/02/06 ONE GR on – Equi LC k, NY 10018 LESS SPEA U, TB-RTVN plicant”) cert ent authoriz e “Covered LC Covered By S tPage.cfm?sw on 02/06/23 6/2022-28263/ ROUP, L 2. ipmentTy 8, United St AKER NTPH-BLS tify that the zation pursu List” NOTE 1 ection 2 of Th witch=P&id=32 /protecting-ag LLC 911 (d)(5)(i) Eq ype tates equipment uant to § 2.9 Da e Secure Netw 5672 ainst-national - quipment Type A for which a 903; of the F ate: Nov. 18 works Act, ava -security-threa Attestation v1.2 authorization FCC rules. 8, 2025 ailable at ats-to-the-com 2 n m

Section Company n Address: 13 Product Na FCCID: 2B Model(s): T 2.911(d)(5 ) We, [TRUS application §1.50002 o Yours sinc e Name: Mar Title: CEO Company n Signature: NOTE 1 Delete option NOTE 2 “Covered List https://www.f c References; 1) 986446 D 0 https://apps.fc 2) Federal R e https://www.fe munications-s 2.911(d) name: TRUS 370 Broadw ame: VOICE BPLTBRTV TB-RTVNTP )(ii) Applica STSTONE G , the applica of this chapt erely, rc Faham name: TRUS not applicable ”; is the List o cc.gov/supplyc 01 Covered Eq cc.gov/oetcf/kd egister docume ederalregister. supply-chain-t TR )(5)(ii) Ce STSTONE way 9th floo E PHONE W VNTPH PH, TB-RTV ant filing GROUP, LLC ant is not id ter, as an en STSTONE e to this applic of Equipment a chain/covered quipment v01 db/forms/FTS ent 2022-2826 gov/documen hrough-the RUSTSTO ertificatio GROUP, LL or, New York WITH WIRE VNTPH-BLU C] (“the app dentified NO ntity produc GROUP, L L cation. and Services C list SearchResul t 63 published o nts/2023/02/06 ONE GR on – App LC k, NY 10018 ELESS SPE U, TB-RTVN plicant”) cer OTE 1 on the “ cing covered LC Covered By S tPage.cfm?sw on 02/06/23 6/2022-28263/ ROUP, L plicant (C 8, United St AKER NTPH-BLS rtify that, as Covered Lis d communic ection 2 of Th witch=P&id=32 /protecting-ag LLC 2.911 (d)(5 Covered L tates s of the date st” NOTE 2 , es cations equ e Secure Netw 5672 ainst-national - 5)(ii) Applicant A List ) e of the filing tablished p uipment. Date: Nov. works Act, ava -security-threa Attestation v1.3 g of the ursuant to 18, 2025 ailable at ats-to-the-com 3 m

TRUSTSTONE GROUP, LLC 2.911 (d)(7)USA Agentv1.3 Section 2.911(d)(7) USA Agent for Service of Process Company name: TRUSTSTONE GROUP, LLC Address: 1370 Broadway 9th floor, New York, NY 10018, United States Product Name: VOICE PHONE WITH WIRELESS SPEAKER FCCID: 2BBPLTBRTVNTPH Model(s): TB-RTVNTPH, TB-RTVNTPH-BLU, TB-RTVNTPH-BLS 2.911(d)(7) USA Designated Agent for Service of Process We, [TRUSTSTONE GROUP, LLC] (“the applicant”) designate [TRUSTSTONE GROUP, LLC] NOTE1 for the purpose of accepting service of process on behalf of the applicant. Applicant consent: We Acknowledge our consent to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address of the designated agent and acknowledge our acceptance of our obligation to maintain an agent for service of process in the United States for no less than one 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. Agent obligation: We Acknowledge our obligation to accept service of process in the United States for matters related to the applicable equipment at our physical U.S. address and email address for no less than one 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. US A Com LLC Add NY FC C 003 Con Tele Ema Sign Title Dat NO T of pr Refe https al-se A Agent mpany nam C dress: 1370 10018, Uni C Registrati 33900465 ntact Name ephone No: ail: complia nature: e: CEO e: Nov. 18, TE 1: An app rocess. erence;Federa s://www.fede ecurity-threa T e: TRUSTS Broadway ted States ion Number : Marc Faha 917533533 nce@trusts 2025 plicant locate al Register doc eralregister.g ats-to-the-com TRUSTST STONE GRO 9th floor, N r(FRN): am 33 stonegroup. d in the Unite cument 2022-2 gov/documen mmunication TONE GR OUP, ew York, .com A A T T ed States ma 28263 publish nts/2023/02/0 s-supply-cha ROUP, LL Applicant Company n Address: 13 NY 10018, FCC Regis t FCC Grante Contact Na Telephone Email: com Signature: Title: CEO Date: Nov. ay designate hed on 02/06/2 06/2022-282 ain-through-t LC 2.911 name: TRUS 370 Broadw United Stat tration Num ee Code: 2B ame: Marc F No: 917533 pliance@tr 18, 2025 e itself as the 23 263/protecting the (d)(7)USA Agen STSTONE way 9th floo tes mber (FRN): BBPL Faham 35333 uststonegr o agent for se g-against-na ntv1.3 GROUP, LL r, New York 003390046 oup.com rvice ation LC k, 65

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Office o Federa 7435 O Columb USA Subjec t FCC ID To Wh o Pursua are req u docume These d propriet might b In addi t in Title busine s authoriz For 4 O For 1 It is ou r corresp docume authoriz Sincer e Signatu Name: Title: C of Engineeri l Communic Oakland Mills bia, MD 210 t; Request f D: 2BBPLTB om It May C nt to the pro uesting the ents from pu documents tary informa be harmful to Schemat Block Di Parts Lis Operatio Tune-up tional to abo 47 CFR §2 ss sensitive zed devices External Test Set Internal P User Ma 45 days, pu OR 180 days pu r understand pondence du ents and thi zation is iss ely, ure: Marc Faha m EO T ing Techno cations Com s Road 046 for Confiden BRTVNTPH Concern, ovisions of t Commissio ublic disclos contain det ation in ope o our comp tic Diagram agram st onal Descrip Procedure ove mention .803 and th informatio n s, we reque Photos tup Photos Photos anual rsuant to P u ursuantto KD ding that all uring the ce s informatio sued. m TRUSTS logy mmission ntiality the Commis on to withho sure indefin tailed syste ration of th e any and wo m ption ned docume e importatio n remains c st Short Te ublic Notice DB 726920 l measurem ertification re on will be av STONE G ssion’s rule old the follow nitely. m and equi e equipmen ould give co ents, in orde on rules in T confidential rm Confide e DA 04-170 0 D01. ment test rep eview proce vailable for GROUP, L s Title 47 S wing attach pment desc nt. The publ ompetitors a er to comply Title 47 CFR until the act ntiality of th 05. ports, FCC ess cannot public revi e LLC Sections §0. hment(s) as criptions an ic disclosu r an unfair ad y with the m R §2.1204, tual market he following ID label for be granted ew once the Date: Nov. 457 and § 0 confidentia d are consi re of these d vantage in marketing re while ensu ting of newly attachmen mat and as confide n e grant of eq 18, 2025 0.459, we al dered as documents the market . egulations ring that y t(s); ntial quipment .

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FCC ID LABEL: Ca. 60mm x 30mm Label Location FCC ID: 2BBPLTBRTVNTPH

FCC RF Exposure EUT Description: VOICE PHONE WITH WIRELESS SPEAKER Model No.: TB-RTVNTPH FCC ID: 2BBPLTBRTVNTPH 1. Limits According to KDB 447498 D01 General RF Exposure Guidance v06 The 1‐g and 10‐g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤50 mm are determined by: [(max power of channel, including tune‐up tolerance, mW)/(min. test separation distance, mm)]·[√f(GHz)]≤3.0 for 1‐g SAR and ≤ 7.5 for 10‐g extremity SAR, Where: Result=P/D*√F F= the RF channel transmit frequency in GHz P=Maximum turn‐up power in mw D=Min. test separation distance in mm 2. Test Result of RF Exposure Evaluation Frequency (MHz) Output power (dBm) Tune Up Power (dBm) Max Tune Up power (mW) Min test separation distance mm Result Limit SAR Test Exclusion EDR 2441 2.29 2±1(3) 1.995 5 0.623 3.0 Pass Note: PK Output power= conducted power. Conducted power see the test report HK2509085105-E, antenna gain = -0.58dBi Per KDB 447498 D01, when the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. The test exclusion threshold is 0.623 which is<= 3, SAR testing is not required. Note: Exclusion Thresholds Results=[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(GHz)] f(GHz) is the RF channel transmit frequency in GHz Distance=5mm

Inverted F Antenna Specification Summary ITEMANT SPEC Model Name 2.4G ANT HorizontalVertical 2400MHz 2 450MHz2500MHz2400MHz 2 450MHz 2500MHz Center Frequency -1.26 -0.76 -0.58 -5.25 -2.46 -1.86 MAX. Gain -0.58dB PolarizationHorizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance50 Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length (mm) Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain (dB) Frequency (MHz) MaxMinAvg 2400-1.26174-30.0801-7.18716 2450-0.765802-36.5604-7.48023 2500-0.585582-22.0315-6.59127 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Gain (dB) Frequency (MHz) MaxMinAvg 2400-5.2537-22.1424-12.4294 2450-2.4652-24.5837-10.4702 2500-1.86120-29.5214-9.20432 ANT Test Labs：Attestation of Global Compliance Co., Ltd.

Page 1 of 48 Report No.: HK2509085105-E FCC Test Report Test Report On Behalf of TRUSTSTONE GROUP, LLC For VOICE PHONE WITH WIRELESS SPEAKER Model No.: TB-RTVNTPH, TB-RTVNTPH-BLU, TB-RTVNTPH-BLS FCC ID: 2BBPLTBRTVNTPH Prepared For: TRUSTSTONE GROUP, LLC 1370 Broadway 9th floor, New York, NY 10018, United States Prepared By: Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: Sept. 08, 2025 ~ Sept. 30, 2025 Date of Report: Sept. 30, 2025 Report Number: HK2509085105-E Page 2 of 48 Report No.: HK2509085105-E Test Result Certification Applicant’s Name .................. : TRUSTSTONE GROUP, LLC Address .................................. : 1370 Broadway 9th floor, New York, NY 10018, United States Manufacturer's Name ........... : TRUSTSTONE GROUP, LLC Address .................................. : 1370 Broadway 9th floor, New York, NY 10018, United States Product Description Trade Mark ............................. : THROWBACK Product Name ........................... : VOICE PHONE WITH WIRELESS SPEAKER Model and/or Type Reference...: TB-RTVNTPH, TB-RTVNTPH-BLU, TB-RTVNTPH-BLS Standards .............................. : 47 CFR FCC Part 15 Subpart C 15.247 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK Testing Technology 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. Date of Test ............................................ : Date (s) of Performance of Tests ............ : Sept. 08, 2025 ~ Sept. 30, 2025 Date of Issue ........................................... : Sept. 30, 2025 Test Result ............................................... : Pass Testing Engineer Len Liao Technical Manager Sliver Wan Authorized Signatory Jason Zhou Page 3 of 48 Report No.: HK2509085105-E Table of Contents Page 1. Summary ............................................................................................................. 5 1.1. Test Standards ............................................................................................................................ 5 1.2. Test Procedures and Results ....................................................................................................... 5 1.3. Information of the Test Laboratory ............................................................................................ 6 1.4. Statement of the Measurement Uncertainty ............................................................................. 6 2. General Information ............................................................................................. 7 2.1. Environmental Conditions .......................................................................................................... 7 2.2. General Description of EUT ........................................................................................................ 7 2.3. Description of Test Modes and Test Frequency .......................................................................... 8 2.4. Equipments Used during the Test ............................................................................................... 9 2.5. Related Submittal(s) / Grant (s) ................................................................................................ 10 2.6. Modifications ............................................................................................................................ 10 2.7. Description of Test Setup .......................................................................................................... 10 2.8. Description of Support Units .................................................................................................... 11 3. Test Conditions and Results ................................................................................ 12 3.1. AC Conducted Emissions Test ................................................................................................... 12 3.2. Radiated Emissions and Band Edge .......................................................................................... 15 3.3. Maximum Peak Conducted Output Power ............................................................................... 26 3.4. 20dB Bandwidth ....................................................................................................................... 27 3.5. Frequency Separation ............................................................................................................... 30 3.6. Number of Hopping Frequency ................................................................................................ 32 3.7. Time of Occupancy (Dwell Time) ............................................................................................. 34 3.8. Out‐of‐Band Emissions ............................................................................................................. 37 3.9. Pseudorandom Frequency Hopping Sequence ........................................................................ 44 3.10. Antenna Requirement .......................................................................................................... 45 4. Test Setup Photos of the EUT ............................................................................. 46 5. Photos of the EUT .............................................................................................. 48 Page 4 of 48 Report No.: HK2509085105-E ** Modified History ** Revision Description Issued Date Remark Revision 1.0 Initial Test Report Release Sept. 30, 2025 Jason Zhou Page 5 of 48 Report No.: HK2509085105-E 1. Summary 1.1. Test Standards The tests were performed ac…

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Test Model: TB-RTVNTPH Radiated Emission AC Conducted Emission RF Conducted Emission