2BUKI-K300Childrens Video Walkie-Talkie

Shenzhen Wanboyi Technology Co., LTD Attestation Statements Not Covered Entity Applicant & Not Covered Equipment To: Federal Communications Commission Date: Jan. 23, 26 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(i) & (ii) FCC ID: 2BUKI-K300 Shenzhen Wanboyi Technology 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: Shenzhen Wanboyi Technology Co., LTD Title: manager Address: RM 405, 4th Floor, Block 6, Danzhutou Enlai Industrial Zone, Longgang Dist, Shenzhen China Tel.: 13728879993 Email: [email protected]

Shenzhen Wanboyi Technology Co., LTD 1 | P a g e Attestation Statements To: Federal Communications Commission Date: Jan. 29, 26 7435 Oakland Mills Road, Columbia, MD 21046, USA Subject: Attestation of Compliance with FCC Covered List Software Requirements FCC ID: [2BUKI-K300] Product Name: [Childrens Video Walkie-Talkie] 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: Langping Dai Title: manager Address: RM 405, 4th Floor, Block 6, Danzhutou Enlai Industrial Zone, Longgang Dist, Shenzhen China Tel.: 13728879993 Email: [email protected] Shenzhen Wanboyi Technology Co., LTD 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 SBOM (Software Bill of Materials) Section Component Name Version Supplier 1 2 3

1/1 US Agent for Service of Process LETTER OF ATTESTATION TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 US Agent for Service of Process: Company name: HOPEK CORPORATION INC FRN: 0034562900 Contact Name: Peter Davis Address: 16755 Coyote Bush Dr Unit 84, San Diego, CA 92127 United States Telephone No: 561-235-6113 Email: [email protected] Applicant: Company name: Shenzhen Wanboyi Technology Co., LTD Grantee Code: 2BUKI FCC ID: 2BUKI-K300 FRN: 0037910684 Contact Name: Langping Dai Address: RM 405, 4th Floor, Block 6, Danzhutou Enlai Industrial Zone, Longgang Dist, Shenzhen China Telephone No: 13728879993 Fax No: / Email: [email protected] Shenzhen Wanboyi Technology Co., LTD certifies that, as of the date of this filing of the application with the TCB, [HOPEK CORPORATION INC] is our designated US agent for service of process for the above referenced FCC ID. Shenzhen Wanboyi Technology Co., LTD accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any commission related proceeding involving equipment. [HOPEK CORPORATION INC] accepts, as of the date of the filing of the application, the obligation of the designated US agent for service of process for the above reference FCC ID. The US Agent for Service of Process is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. The Applicant is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. Date: 2026-01-23 Applicant’s Name: Langping Dai US Agent’s Name: Peter Davis Title: manager Title: manager Signature: Signature:

Shenzhen Wanboyi Technology Co., LTD Family models declaration letter. Date: January 29, 2026 We Shenzhen Wanboyi Technology Co., LTD Of RM 405, 4th Floor, Block 6, Danzhutou Enlai Industrial Zone, Longgang Dist, Shenzhen China Product: Childrens Video Walkie-Talkie Model Name: K300 Serial Model: K500,K600,K800,K2,K3,K5,K6,K8 FCC ID: 2BUKI-K300 Difference description of series models: All models have the same circuit and RF module, except for the model name and color Thanks Sincerely Signature Name: Langping Dai Date: Jan.23, 2026 Title: manager

Shenzhen Wanboyi Technology Co., LTD Jan 23, 2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request for: FCC ID: 2BUKI-K300 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 (up to 180) 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  External Photos  Test Setup Photos Sincerely, Title: manager Address: RM 405, 4th Floor, Block 6, Danzhutou Enlai Industrial Zone, Longgang Dist, Shenzhen China Tel.: 13728879993 Email: [email protected]

Shenzhen Wanboyi Technology Co., LTD Jan 23, 2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization for FCC ID: 2BUKI-K300 I, the undersigned, hereby authorize Shenzhen PSI Testing Co., Ltd. to act on our behalf in all matters relating to this application for equipment certification. Any act carried out by Shenzhen PSI 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 Wanboyi Technology 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, Title：manager Tel: 13728879993 Fax: / Email: [email protected]

Product Name:Childrens Video Walkie-Talkie Model：K300 Specifications：5 VDC 1A Manufacturer： Shenzhen Wanboyi Technology Co., LTD FCC ID: 2BUKI-K300 Label dimensions (length x width)：40*30MM

Page 1 of 1 Report No.: psi2601153-C01-R01 Shenzhen PSI Testing Co., Ltd. Tel: 0755-23011775 | E-mail: [email protected] | http://www.psi-lab.com Add: 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xingye West Road, Shajing Subdistrict, Bao'an District, Shenzhen, Guangdong, China Appendix IV RF Exposure evaluation FCC ID: 2BUKI-K300 According to 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 f(GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation The result is rounded to one decimal place for comparison. 2.4G WiFi: Worse case output power is as below: [2437MHz: 9.44dBm] Maximum output power is 9.44dBm (8.79mW). (8.79mW /5mm)·[√2.480(GHz)]=2.75<3.0 for 1-g SAR Then SAR evaluation is not required.

深圳旭航通讯科技有限公司 ShenzhenXuhangCommunication 规格承认书 客户 CUSTOMER 客户料号 CUSTOMERNO. 供方品名 PARTNAME WIFI天线 规格名称 SUPPLIERNO. 客户确认 CUSTOMERAPPROVEDBY 检验 APPROVAL 审核 CHIEF 批准 SUPERVISOR 设计 DESIGN 审核 CHECK 批准 APPROVAL LuoRobertSHANG Date:June18,2025 DIRECTORY NO.ContentsNumber ofPage PageCode 1SpecCover11 2DIRECTORY12 3TestReports13 4MatchingCircuits14 5DRAWING15 6TestData36-9 7 Antennaassemblyposition 110 电性测试报告 TESTREPORTS 频率 Frequency WIFI(2400~2500MHz) 阻抗 Impedance 500hmNominal 驻波比 V.S.W.R ＜2.0 回波损耗 ReturnLoss -10dBMax 辐射 Radiation Omni-directional 增益 Gain(Peak) 2.62dBi 极化方式 Polarization Linear,Vertical 功率 AdmittedPower 1W 连接器 Connector PhysicalProperties 天线材质 AntennaMaterial FPC 线材类型 CableType O.D.1.13mm 工作温度 OperatingTemp. -10-+60°C 存储温度 StorageTemp. -10-+70°C 线材颜色 CableColor Black 匹配电路 MatchingCircuits 匹配电路 Theoriginalmatchingcircuithasnotbeenmodified DRAWING 测试数据 TestData 无源数据 3D方向图 无源驻波 Standingwaveloss 天线安装位置 Antennaassemblyposition

Shenzhen PSI Testing Co., Ltd. Tel: 0755-23011775 | E-mail: [email protected] | http://www.psi-lab.com Page 1 of 64 Add: 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xingye West Road, Shajing Subdistrict, Bao'an District, Shenzhen, Guangdong, China FCC TEST REPORT FCC ID: 2BUKI-K300 On Behalf of Shenzhen Wanboyi Technology Co., LTD Childrens Video Walkie-Talkie Model No.: K300, K500,K600,K800,K2,K3,K5,K6,K8 Prepared for : Shenzhen Wanboyi Technology Co., LTD Address : RM 405, 4th Floor, Block 6, Danzhutou Enlai Industrial Zone, Longgang Dist, Shenzhen China Prepared By : Shenzhen PSI Testing Co., Ltd. Address : 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xingye West Road, Shajing Subdistrict, Bao'an District, Shenzhen, Guangdong, China Report Number : psi2601153-C01-R01 Date of Receipt : Jan.07, 2026 Date of Test : Jan.07, 2026-Jan.15, 2026 Date of Report : Jan.16, 2026 Version Number : V0 Page 2 of 64 Report No.: psi2601153-C01-R01 Shenzhen PSI Testing Co., Ltd. Tel: 0755-23011775 | E-mail: [email protected] | http://www.psi-lab.com Add: 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xingye West Road, Shajing Subdistrict, Bao'an District, Shenzhen, Guangdong, China TABLE OF CONTENTS Description Page 1. Summary Of Standards And Results ------------------------------------------------------------- 6 1.1. Description of Standards and Results ------------------------------------------------------- 6 2. General Information ------------------------------------------------------------------------------------ 7 2.1. Description of Device (EUT) ------------------------------------------------------------------- 7 2.2. Accessories of Device (EUT) ------------------------------------------------------------------ 8 2.3. Tested Supporting System Details------------------------------------------------------------ 8 2.4. Block Diagram of Connection Between EUT and Simulators ------------------------- 8 2.5. Test Mode Description --------------------------------------------------------------------------- 9 2.6. Software test version and power setting information ---------------------------------- 10 2.7. Test Conditions ---------------------------------------------------------------------------------- 10 2.8. Test Facility --------------------------------------------------------------------------------------- 11 2.9. Measurement Uncertainty -------------------------------------------------------------------- 11 2.10. Test Equipment List----------------------------------------------------------------------------- 12 3. Spurious Emission ------------------------------------------------------------------------------------ 13 3.1. Test Limits ----------------------------------------------------------------------------------------- 13 3.2. Block Diagram of Test setup ----------------------------------------------------------------- 14 3.3. Test Procedure ----------------------------------------------------------------------------------- 15 3.4. Test Results--------------------------------------------------------------------------------------- 16 4. Power Line Conducted Emission ---------------------------------------------------------------- 23 4.1. Test Limits ----------------------------------------------------------------------------------------- 23 4.2. Test Procedure ----------------------------------------------------------------------------------- 23 4.3. Test Setup ----------------------------------------------------------------------------------------- 23 4.4. Test Results--------------------------------------------------------------------------------------- 24 5. Out-of-band Emissions ------------------------------------------------------------------------------ 27 5.1. Test Limits ----------------------------------------------------------------------------------------- 27 5.2. Test Procedure ----------------------------------------------------------------------------------- 27 5.3. Test Setup ----------------------------------------------------------------------------------------- 27 5.4. Test Results--------------------------------------------------------------------------------------- 27 6. Conducted Maximum Output Power ------------------------------------------------------------ 43 6.1. Test limits ------------------------------------------------------------------------------------------ 43 6.2. Test Procedure ----------------------------------------------------------------------------------- 43 6.3. Test Setup ----------------------------------------------------------------------------------------- 43 6.4. Test Results--------------------------------------------------------------------------------------- 43 7. Peak Power Spectral Density --------------------------------------------------------------------- 44 7.1. Test limits ------------------------------------------------------------------------------------------ 44 7.2. Test Procedure ----------------------------------------------------------------------------------- 44 7.3. Test Setup ----------------------------------------------------------------------------------------- 44 7.4. Test Results--------------------------------------------------------------------------------------- 44 8. Occupied Bandwidth --------------------------------------------------------------------------------- 50 8.1. Test limits ------------------------------------------------------------------------------------------ 50 8.2. Test Procedure ----------------------------------------------------------------------------------- 50 8.3. Test Setup ----------------------------------------------------------------------------------------- 50 8.4. Test Results--------------------------------------------------------------------------------------- 50 Page 3 of 64 Report No.: psi2601153-C01-R01 Shenzhen PSI Testing Co., Ltd. Tel: 0755-23011775 | E-mail: [email protected] | http://www.psi-lab.com Add: 1-2/F., Building 5, Yudafu Industrial Park, No.10, Xing…

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