2BMVU-DGPB301Power Bank

Attestation Statements 12/30/2024 TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA RE: Attestation Statements Part 2.911(d)(7) request for GC: 2BMVU KOWIN CO., LIMITED hereby authorize Wilson Tech Service LLC to act as our designated U.S. agent for service of process, KOWIN CO., LIMITED 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 the equipment. Wilson Tech Service LLC accepts the responsibility to act as designated U.S. agent for service of process. Applicant Information： Company name: KOWIN CO., LIMITED Contact Name: Jack.xiong Address: 19H Maxgrand plaza, No.3 Tai Yau Street, San Po kong, Kowloon HongKong FRN: 0036421725 Telephone No: 17722596339 Email: jack.xiong@ Signature [Jack.xiong] U.S. Agent Information: Company Name: Wilson Tech Service LLC Address: 1312 17th Street Suite 692, Denver, CO, 80202, US FRN: 0033402033 Contact Name: Wilson Cheung Telephone No: +1-716-965-5112 Email: [email protected] Signature [Wilson Cheung]

KOWIN CO., LIMITED 2024-12-27 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: 2BMVU-DGPB301) [KOWIN CO., LIMITED] (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, Jack xiong Manager KOWIN CO., LIMITED 19H Maxgrand plaza, No.3 Tai Yau Street, San Po kong, Kowloon HongKong KOWIN CO., LIMITED 2024-12-27 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for(FCC ID: 2BMVU-DGPB301) [KOWIN CO., LIMITED] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Sincerely, Jack xiong Manager KOWIN CO., LIMITED 19H Maxgrand plaza, No.3 Tai Yau Street, San Po kong, Kowloon HongKong

External Photographs View of EUT-1 View of EUT-2 Page 2 of 3 View of EUT-3 View of EUT-4 Page 3 of 3 View of EUT-5 View of EUT-6

2.9mm 20mm

Internal Photographs Internal View of EUT-1 Internal View of EUT-2 Phone + Earphone Antenna Watch Antenna Page 2 of 4 Internal View of EUT-3 Internal View of EUT-4 Page 3 of 4 Internal View of EUT-5 Internal View of EUT-6 Page 4 of 4 Internal View of EUT-7

EUT Specification FCC ID: 2BMVU-DGPB301 Characteristics Description Product Name Power Bank Model number DGPB301 Series Model / Power Supply DC 5V / DC 9V / 12V / Battery 3.85V Operating Frequency Range 110-205KHz for phone charging 300-350KHz for Watch charging 110-205KHz for Earphone charging Modulation Technique ASK Antenna Type Coil Antenna Device category Portable (<20cm separation) Mobile (>20cm separation) Others ___ Antenna diversity Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Evaluation applied MPE Evaluation SAR Evaluation Applicable Standard: FCC Part 1(1.1310), Part 2(2.1093) and KDB 680106 D01 Wireless Power Transfer v04 Applicable Requirement: Three different categories of transmitters are defined by the FCC in OET Bulletin 65. These categories are fixed installation, mobile, and portable and are defined as follows: 2 / 18 Fixed Installations: fixed location means that the device, including its antenna, is physically secured at a permanent location and is not able to be easily moved to another location. Additionally, distance to humans from the antenna is maintained to at least 2 meters. Mobile Devices: a mobile device is defined as a transmitting device designed to be used in other than fixed locations and to be generally used in such a way that a separation distance of at least 20 centimeters is normally maintained between the transmitter's radiating structures and the body of the user or nearby persons. Transmitters designed to be used by consumers or workers that can be easily re-located, such as a wireless modem operating in a laptop computer, are considered mobile devices if they meet the 20 centimeter separation requirement. The FCC rules for evaluating mobile devices for RF compliance are found in 47 CFR ß2.1091. Portable Devices: a portable device is defined as a transmitting device designed to be used so that the radiating structure(s) of the device is/are within 20 centimeters of the body of the user. Portable device requirements are found in Section 2.1093 of the FCC's Rules (47 CFRß2.1093). The FCC also categorizes the use of the device as based upon the user’s awareness and ability to exercise control over his or her exposure. The two categories defined are Occupational/ Controlled Exposure and General Population/Uncontrolled Exposure. These two categories are defined as follows: Occupational/controlled exposure limits apply in situations in which persons are exposed as a consequence of their employment provided those persons are fully aware of the potential for exposure and can exercise control over their exposure. Limits for occupational/controlled exposure also apply in situations when a person is transient through a location where occupational/controlled limits apply provided he or she is made aware of the potential for exposure. The phrase fully aware in the context of applying these exposure limits means that an exposed person has received written and/or verbal information fully explaining the potential for RF exposure resulting from his or her employment. With the exception oftransient persons, this phrase also means that an exposed person has received appropriate training regarding work practices relating to controlling or mitigating his or her exposure. Such training is not required for transient persons, but they must receive written and/or verbal information and notification (for example, using signs) concerning their exposure potential and appropriate means available to mitigate their exposure. The phrase exercise control means that an exposed person is allowed to and knows how to reduce or avoid exposure by administrative or engineering controls and work practices, such as use of personal protective equipment or time averaging of exposure. General population/uncontrolled exposure limits apply in situations in which the general public may be exposed, or in which persons who are exposed as a consequence of their employment may not be fully aware of the 3 / 18 potential for exposure or cannot exercise control over their exposure. Licensees and applicants are responsible for compliance with both the occupational/controlled exposure limits and the general population/uncontrolled exposure limits as they apply to transmitters under their jurisdiction. Licensees and applicants should be aware that the occupational/controlled exposure limits apply especially in situations where workers may have access to areas in very close proximity to antennas and access to the general public may be restricted. In lieu of evaluation with the general population/uncontrolled exposure limits, amateur licensees authorized under part 97 of this chapter and members of his or her immediate household may be evaluated with respect to the occupational/controlled exposure limits in this section, provided appropriate training and information has been provided to the amateur licensee and members of his/her household. Other nearby persons who are not members of the amateur licensee's household must be evaluated with respect to the general population/uncontrolled exposure limits. Test Setup Block Test Procedure 4 / 18 1.Connect the EUT and equipment as above diagram of test configuration. 2.EUT was placed on a table, and the measure probe was placed at a measurement distance of 20cm from the EUT to the center of the probe. 3.Power on the measuring probe, the EUT was set at the maximum field strength emission state. 4.The EUT was put in different directions (Left, Right, Front, Rear, Top and Bottom) toward to the measure probe. The distance from the top of the EUT to the probe is 20CM, and the distance from other directions is 20cm.Measure the value of field strength. 5.Record the worst data of the different directions. Measuring Device And Test Equipment Used Equipment Manufacturer Model No. Serial No. Last Cal. Due Date  E&H-Field Probe(9kHz-30M Hz) Narda EHP-200A 180ZX11012 2024/09/14 2025/09/13 Description of Support Device phone ： Manufacturer: Apple…

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Fine Page 1 of 4 承 認 書 SPECIFICATION FOR APPROVAL 客 戶： CUSTOMER: KOWIN 客 戶 料 號： CUST P/N: 音泽 料 號： FINE P/N: G43.5*0.8-20.5-0.08*48P-10TS*6.5UH-L15MM+BJ 産 品 型 號： DESC: Φ43.5MMX0.8MM 日 期： DATE: 2023/09/01 版 本： Version: A.0 擬制 PREPARED BY 審核 CHECKED BY 批准 APPROVED BY 客戶承認 CUSTOMER APPROVE He Lixing Mari Dan keqing DongGuan YinZe Electronic Technology CO., LTD Factory Address:3/F, Building D, No. 40, Fulong Education Road, Shipai Town, Dongguan City, Guangdong Province, China Version Change History Fine Page 2 of 4 版本 Rev. 變 更 前 Before Change 變 更 後 After Change 更 改 日 期 Change Date 批 准 Approved By A.0 新发行 ---- 2023.09.01 Dan keqing Fine Page 3 of 4 SPECIFICATION 産 品 型 號： DESC G43.5*0.8-20.5-0.08*48P-10T S-6.5UH-L15MM+BJ 版本 Rev：A.0 客戶CUST: KOWIN 客户料号CUST P/N: 一、尺寸DIMENSION:(mm) 二、原理图SCHEMATIC DIAGRAM: A 43.5±0.3 B 38.3±0.5 C 20.5±0.5 D 15 ±2 E 3±2 F 5.3±0.2 G H I K 注Notes： 1.交叉出线Crossing out of the line; 2.线圈贴双槽磁片，磁片尺寸 Coil affixed double slot magnetic sheet, magnetic sheet size 43.5±0.5mm,， 厚度为thicknesses 0.8±0.05mm. 3.磁片背面贴背胶Adhesive backing on the back of the magnet 三、绕线参数Winding Specification: 序号 NO. 端子 TERMINAL 线径 WIRE 圈数 Turns 绕线方向 Winding Direction 1 S F Enameled wire 0.08*48P 10Ts CCW 四、电气特性ELECTRICAL CHARACTERISTICS: 温度TEMPERATURE:25±10°C, 湿度RELATIVE HUMIDITY:65±20% 序号 NO. 项目 ITEM 端子 TERMINAL 标准 SPECIFICATION 测试条件 TEST FREQUENCY 测试仪器 TEST EQUIPMENTS 1 IND. S-F 3.7uH ±10% Solenoid 100KHz/1.0V LCZ METER 1062B 2 IND. S-F 6.5H ±10% Magnetizing sheet 100KHz/1.0V LCZ METER 1062B 3 DCR S-F ≤100mΩ LCZ METER 502B Fine Page 4 of 4 擬制/日期PREPARED BY/DATE 審核/日期CHECKED BY/DATE He Lixing 2023.08.01

TRF No.: 04-E001-0B TRF Originator: GTG TRF Date: 2023-12-13 Web: www.gtggroup.com E-mail: [email protected] Tel.: 86-400 755 8988 CFR 47 FCC PART 15 SUBPART C TEST REPORT For Power Bank MODEL NUMBER: DGPB301 REPORT NUMBER: E04A24110910F00301 ISSUE DATE: December 23, 2024 FCC ID: 2BMVU-DGPB301 Prepared for KOWIN CO., LIMITED 19H Maxgrand plaza, No.3 Tai Yau Street, San Po kong, Kowloon HongKong Prepared by Guangdong Global Testing Technology Co., Ltd. Room 101-105, 203-210, Building 1, No.2, Keji 8 Road, Songshan Lake Park, Dongguan city, Guangdong, People’s Republic of China, 523808 This report is based on a single evaluation of the submitted sample(s) of the above mentioned Product, it does not imply an assessment of the production of the products. This report shall not be reproduced, except in full, without the written approval ofGuangdong Global Testing Technology Co., Ltd. REPORT NO.: E04A24110910F00301 Page 2 of 40 TRF No.: 04-E001-0B Global Testing , Great Quality. Revision History Rev. Issue Date Revisions Revised By V0 December 23, 2024 Initial Issue REPORT NO.: E04A24110910F00301 Page 3 of 40 TRF No.: 04-E001-0B Global Testing , Great Quality. Summary of Test Results Test Item Limit/Requirement Result Antenna Requirement FCC Part 15.203 Pass AC Power Line Conducted Emission FCC Part 15.207 Pass 20dB Bandwidth FCC Part 15.215 Pass Radiated Emission FCC Part 15.205/15.209 Pass Note: 1. N/A: In this whole report not applicable. *This test report is only published to and used by the applicant, and it is not for evidence purpose in China. *The measurement result for the sample received is <Pass> according to <CFR 47 FCC PART 15 SUBPART C> when <Accuracy Method> decision rule is applied. REPORT NO.: E04A24110910F00301 Page 4 of 40 TRF No.: 04-E001-0B Global Testing , Great Quality. CONTENTS 1. ATTESTATION OF TEST RESULTS ..................................................................................... 5 2. TEST METHODOLOGY ......................................................................................................... 6 3. FACILITIES AND ACCREDITATION ..................................................................................... 6 4. CALIBRATION AND UNCERTAINTY ................................................................................... 7 4.1. MEASURING INSTRUMENT CALIBRATION ........................................................... 7 4.2. MEASUREMENT UNCERTAINTY ............................................................................ 7 5. EQUIPMENT UNDER TEST .................................................................................................. 8 5.1. DESCRIPTION OF EUT ........................................................................................... 8 5.2. TEST MODE ............................................................................................................. 8 5.3. SUPPORT UNITS FOR SYSTEM TEST ................................................................... 8 5.4. SETUP DIAGRAM .................................................................................................... 9 6. MEASURING EQUIPMENT AND SOFTWARE USED......................................................... 10 7. RADIATED TEST RESULTS ............................................................................................... 11 7.1. Radiated Spurious Emission ................................................................................... 15 8. AC POWER LINE CONDUCTED EMISSION ...................................................................... 33 9. 20DB BANDWIDTH ............................................................................................................. 36 10. ANTENNA REQUIREMENT ................................................................................... 40 REPORT NO.: E04A24110910F00301 Page 5 of 40 TRF No.: 04-E001-0B Global Testing , Great Quality. 1. ATTESTATION OF TEST RESULTS Applicant Information Company Name: KOWIN CO., LIMITED Address: 19H Maxgrand plaza, No.3 Tai Yau Street, San Po kong, Kowloon HongKong Manufacturer Information Company Name: KOWIN CO., LIMITED Address: 19H Maxgrand plaza, No.3 Tai Yau Street, San Po kong, Kowloon HongKong EUT Information Product Description: Power Bank Model: DGPB301 Series Model: / Brand: / Sample Received Date: December 10, 2024 Sample Status: Normal Sample ID: A24110910 001 Date of Tested: December 10, 2024 to December 23, 2024 APPLICABLE STANDARDS STANDARD TEST RESULTS CFR 47 FCC PART 15 SUBPART C Pass Prepared By: Checked By: Win Huang Shawn Wen Project Engineer Laboratory Leader Approved By: Shawn Wen Laboratory Manager REPORT NO.: E04A24110910F00301 Page 6 of 40 TRF No.: 04-E001-0B Global Testing , Great Quality. 2. TEST METHODOLOGY All tests were performed in accordance with the standard CFR 47 FCC PART 15 SUBPART C 3. FACILITIES AND ACCREDITATION Accreditation Certificate A2LA (Certificate No.: 6947.01) Guangdong Global Testing Technology Co., Ltd. has been assessed and proved to be in compliance with A2LA. FCC (FCC Designation No.: CN1343) Guangdong Global Testing Technology Co., Ltd. has been recognized to perform compliance testing on equipment subject to Supplier's Declaration of Conformity (SDoC) and Certification rules ISED (Company No.: 30714) Guangdong Global Testing Technology Co., Ltd. has been registered and fully described in a report filed with ISED. The Company Number is 30714 and the test lab Conformity Assessment Body Identifier (CABID) is CN0148. Note: All tests measurement facilities use to collect the measurement data are located at Room 101-105, 203-210, Building 1, No.2, Keji 8 Road, Songshan Lake Park, Dongguan city, Guangdong, People’s Republic of China, 523808 REPORT NO.: E04A24110910F00301 Page 7 of 40 TRF No.: 04-E001-0B Global Testing , Great Quality. 4. CALIBRATION AND UNCERTAINTY 4.1. MEASURING INSTRUMENT CALIBRATION The measuring equipment utilized to perform the tests documented in this report has been calibrated in acco…

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Fine Page 1 of 4 承 認 書 SPECIFICATION FOR APPROVAL 客 戶： CUSTOMER: KOWIN 客 戶 料 號： CUST P/N: 音泽 料 號： FINE P/N: G43.5*0.8-20.5-0.08*48P-10TS*6.5UH-L15MM+BJ 産 品 型 號： DESC: Φ43.5MMX0.8MM 日 期： DATE: 2023/09/01 版 本： Version: A.0 擬制 PREPARED BY 審核 CHECKED BY 批准 APPROVED BY 客戶承認 CUSTOMER APPROVE He Lixing Mari Dan keqing DongGuan YinZe Electronic Technology CO., LTD Factory Address:3/F, Building D, No. 40, Fulong Education Road, Shipai Town, Dongguan City, Guangdong Province, China Version Change History Fine Page 2 of 4 版本 Rev. 變 更 前 Before Change 變 更 後 After Change 更 改 日 期 Change Date 批 准 Approved By A.0 新发行 ---- 2023.09.01 Dan keqing Fine Page 3 of 4 SPECIFICATION 産 品 型 號： DESC G43.5*0.8-20.5-0.08*48P-10T S-6.5UH-L15MM+BJ 版本 Rev：A.0 客戶CUST: KOWIN 客户料号CUST P/N: 一、尺寸DIMENSION:(mm) 二、原理图SCHEMATIC DIAGRAM: A 43.5±0.3 B 38.3±0.5 C 20.5±0.5 D 15 ±2 E 3±2 F 5.3±0.2 G H I K 注Notes： 1.交叉出线Crossing out of the line; 2.线圈贴双槽磁片，磁片尺寸 Coil affixed double slot magnetic sheet, magnetic sheet size 43.5±0.5mm,， 厚度为thicknesses 0.8±0.05mm. 3.磁片背面贴背胶Adhesive backing on the back of the magnet 三、绕线参数Winding Specification: 序号 NO. 端子 TERMINAL 线径 WIRE 圈数 Turns 绕线方向 Winding Direction 1 S F Enameled wire 0.08*48P 10Ts CCW 四、电气特性ELECTRICAL CHARACTERISTICS: 温度TEMPERATURE:25±10°C, 湿度RELATIVE HUMIDITY:65±20% 序号 NO. 项目 ITEM 端子 TERMINAL 标准 SPECIFICATION 测试条件 TEST FREQUENCY 测试仪器 TEST EQUIPMENTS 1 IND. S-F 3.7uH ±10% Solenoid 100KHz/1.0V LCZ METER 1062B 2 IND. S-F 6.5H ±10% Magnetizing sheet 100KHz/1.0V LCZ METER 1062B 3 DCR S-F ≤100mΩ LCZ METER 502B Fine Page 4 of 4 擬制/日期PREPARED BY/DATE 審核/日期CHECKED BY/DATE He Lixing 2023.08.01

Fine Page 1 of 4 FY-GZ001 承 認 書 SPECIFICATION FOR APPROVAL 客 戶： KOWIN CUSTOMER: 客 戶 料 號： CUST P/N: 音泽 料 號： BESOFTP/N: 産 品 型 號： DESC: 日 期： 14.9-0.08*24-11T-7.1UH-L10MM 2024/01/09 DATE: 版 本： Version: A.0 擬制 PREPARED BY 審核 CHECKED BY 批准 APPROVED BY 客戶承認 CUSTOMER APPROVE 何立成 马莉 但可清 DongGuan YinZe Electronic Technology CO., LTD Factory Address:3/F, Building D, No. 40, Fulong Education Road, Shipai Town, Dongguan City, Guangdong Province, China Fine Page 2 of 4 FY-GZ001 Version Change History 版本 Rev. 變 更 前 Before Change 變 更 後 After Change 更 改 日 期 Change Date 批 准 Approved By A.0 新发行 ---- 2024/01/09 Dan keqing FY-GZ001 Fine Page 3 of 4 SPECIFICATION 注： 1.线圈贴磁片，磁片尺寸 24mm,厚度为2.7mm带缺口 2.线圈出线位置缠宽度 6mm ±0.5 高温胶纸。 3.磁片背面贴带手撕位圆形 直径23mm(ref) （ref）普通双面胶。 産 品 型 號： DESC 14.9-0.08*24-11T- 7.1UH-L10MM 版本 Rev：A.0 客戶 CUST: KOWIN 音泽料号 Fine P/N： 客户料号 CUST P/N: 一、尺寸 DIMENSION:(mm) 二、原理图SCHEMATIC DIAGRAM: A 24.5±0.5 B 2.7±0.5 C 23.7±0.25 D 20.5±1 E 14.5±0.3 H 7.5±0.3 I 2±1 J 10±2 K 7.5*2.0 三、绕线参数 Winding Specification: 四、电气特性 ELECTRICAL CHARACTERISTICS: 温度 TEMPERATURE:25 ±10°C, 湿度 RELATIVE HUMIDITY:65 ±20% 序号 NO. 端子 TERMINAL 线径 WIRE 圈数 Turns 绕线方向 Winding Direction 1 S F Hot Air Line 0.08*24P 11TS Normalcy 序号 NO. 项目 ITEM 端子 TERMINAL 标准 SPECIFICATION 测试条件 TEST FREQUENCY 测试仪器 TEST EQUIPMENTS 1 IND. S-F 3.7uH ±20% Solenoid 100KHz/1V LCZ METER 1062B 2 IND. S-F 7.1uH ±10% Magnetizing sheet 100KHz/1V LCZ METER 1062B 3 Q 值 S-F ≤35 100KHz/1V LCZ METER 1062B 4 DCR S-F 擬制/日期 PREPARED BY/DATE 審核/日期 CHECKED BY/DATE FY-GZ001 Fine Page 4 of 4 SPECIFICATION 序号 number 材 料 名 称 Material name 品 名 描 述 Description 制 造 商 Manufacturer 1 Enameled wire 0.08*24 strands Hot air enameled wire 0.08*24 strands 2 Lead Free Tin Strips Lead Free Tin Strips 3 magnetic disk Φ24.5*12.7mm Manganese-zinc hard magnetic sheet 4 Glue 201 Glue 5 Magnets 7.5*2mm 6 Perforated double sided tape Round Diameter 17mm(ref)Backing 産 品 型 號： DESC CLB 版本 Rev：A.0 客戶 CUST: 音泽料号 Fine P/N： 客户料号 CUST P/N: 擬制/日期 PREPARED BY/DATE Dan keqing 2024/01/09

Radiated Spurious Emission AC Power Line Conducted Emission RF Exposure Evaluation