2BR75M303PRODigital Player

Digital Player FCC Warnning: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection againstharmful interference in a residential installation. This equipment generates, uses and can radiateradio frequency energy and, if not installed and used in accordance with the instructions, maycause harmful interference to radio communications. However, there is no guarantee thatinterference will not occur in a particular installation. If this equipment does cause harmfulinterference to radio or television reception, which can be determined by turning the equipmentoff and on, the user is encouraged to try to correct the interference by one or more of thefollowing measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 0cm between the radiator and your body. ISED Statement ‐ English: This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions: (1) This device may not cause interference. (2) This device must accept any interference, including interference that may cause undesired operation of the device. ‐ French:Cet appareil contient des émetteurs/récepteurs exempts de licence qui sont conformes aux CNR exempts de licence d’Innovation, Sciences et Développement économique Canada. Le fonctionnement est soumis aux deux conditions suivantes : (1) Cet appareil ne doit pas causer d’interférences. (2) Cet appareil doit accepter toute interférence, y compris les interférences susceptibles de provoquer un fonctionnement indésirable de l’appareil. This equipment complies with Canada radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 0cm between the radiator & your body. Cet équipement est conforme Canada limites d'exposition aux radiations dans un environnement non contrôlé. Cet équipement doit être installé et utilisé avec une distance minimale de 0 cm entre le radiateur et votre corps.

Shenzhen HTT Technology Co., Ltd. Report No.: HTT202508451 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 4 Product Name: Digital Player Model No.: M303 Pro EUT Constructional Details Internal Photo Report No.: HTT202508451 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 4 ANTENNA Report No.: HTT202508451 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 3 of 4 Report No.: HTT202508451 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 4 of 4 ------End------

Shenzhen HTT Technology Co., Ltd. Report No.: HTT202508451 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 2 Product Name: Digital Player Model No.: M303 Pro Test Setup Photo Radiated Emission Report No.: HTT202508451 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 2 Conducted Emission RF TEST ------End------

ANWEIcommnuicationEquipmentCo.,Ltd APPROVALSHEET Customer Haofengweishi Specs M404 PartNumber AW006-M404-021-A0 FrequencyBand 2.4G/5GWiFi Color Black Edition REV:A0 Salesperson Huanghe Design Huanghe Structure QINYUNLIN Confirm Date 2025/9/25 SigningDate Customerconfirmation: ANTManufacturers： ANWEIcommnuicationEquipmentCo.,Ltd Address:2ndFloor,EastBlock,Building5,YifenghuaInnovationIndustrialPark,HuaningRoad,DalangStreet,Longhua District,ShenzhenCity,GuangdongProvince Projectdevelopmentenvironment  （WIFIantenna）+（2.4GWIFIantenna） （Workingfrequencybandof2.4GWIFIantenna）：2400~2500 (Matcheingnetwork) (AntennaGain&Efficiency) WIFIantennaPolarGraphs WIFIantenna3D_Graphs(Total) TheEnd

Shenzhen HTT Technology Co., Ltd. Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China FCC PART 15 SUBPART C TEST REPORT FCC PART 15.247 Report Reference No. ...................: FCC ID. ......................................... : HTT202508451F02 2BR75M303PRO Compiled by ( position+printed name+signature) : File administrators Supervised by ( position+printed name+signature) : Project Engineer Approved by ( position+printed name+signature) : RF Manager Date of issue ...................................: Mar. 10, 2026 Testing Laboratory Name .............: Shenzhen HTT Technology Co.,Ltd. Address ...........................................: 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao’an District, Shenzhen, Guangdong, China Applicant’s name...........................: Shenzhen Yunchuang Century Technology Co., Ltd. Address ...........................................: 7th Floor, Building A, Shuichan Sanwei Industrial Park, No. 5003 Bao’an Avenue, Sanwei Community, Hangcheng Street, Bao’an District, Shenzhen, China Test specification ......................... : Standard ..........................................: FCC Part 15.247 Shenzhen HTT Technology Co.,Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HTT Technology Co.,Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HTT 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. Equipment description ................ : Digital Player Trade Mark ......................................: N/A Manufacturer ...................................: Shenzhen Yunchuang Century Technology Co., Ltd. Model/Type reference .....................: M303 Pro Listed Models ..................................: M1, M4, M5, M4S, M7, D22, A55, A66, A88, X50, X58, M303, M303 Pro, M501, M501 Pro, M502, M508, M508 Pro, M301, M301 Pro, M305, M308, M601, M602, M605, M608, M610, H12, H13, H18, W10, W11, W12, W16, W18, W19, G50, G53, G55, G60, G66, G68, G69, G88, DW10, DW20, DW30, DW50, DW60, DW80, DW90 Modulation ......................................: GFSK Frequency ........................................ From 2402MHz to 2480MHz Ratings ............................................: DC 3.7V From Battery and DC 5V From External Circuit Result ..............................................: PASS Report No.: HTT202508451F02 Page 2 of 39 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China T E S T R E P O R T Equipment under Test : Digital Player Model /Type : M303 Pro Listed Models : M1, M4, M5, M4S, M7, D22, A55, A66, A88, X50, X58, M303, M303 Pro, M501, M501 Pro, M502, M508, M508 Pro, M301, M301 Pro, M305, M308, M601, M602, M605, M608, M610, H12, H13, H18, W10, W11, W12, W16, W18, W19, G50, G53, G55, G60, G66, G68, G69, G88, DW10, DW20, DW30, DW50, DW60, DW80, DW90 Model difference : The PCB board, circuit, structure and internal of these models are the same, Only model number is different for these model. Applicant : Shenzhen Yunchuang Century Technology Co., Ltd. Address : 7th Floor, Building A, Shuichan Sanwei Industrial Park, No. 5003 Bao’an Avenue, Sanwei Community, Hangcheng Street, Bao’an District, Shenzhen, China Manufacturer : Shenzhen Yunchuang Century Technology Co., Ltd. Address : 7th Floor, Building A, Shuichan Sanwei Industrial Park, No. 5003 Bao’an Avenue, Sanwei Community, Hangcheng Street, Bao’an District, Shenzhen, China Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: HTT202508451F02 Page 3 of 39 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Contents 1 TEST STANDARDS .......................................................................................................................................... 4 2 SUMMARY ........................................................................................................................................................ 5 2.1 General Remarks .................................................................................................................................... 5 2.2 Product Description ................................................................................................................................. 5 2.3 Equipment Under Test ............................................................................................................................ 5 2.4 Short description of the Equipment under Test (EUT) ............................................................................ 5 2.5 EUT configuration .................................................................................................................................... 5 2.6 EUT operation mode ............................................................................................................................... 5 2.7 Block Diagram of Test Setup .................................................................................................................. 6 2.8 Related Submittal(s) / Grant (s) .............................................................................................................. 6 2.9 Modificati…

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1 Appendix RF Test Data for WIFI 2.4G Company: : Shenzhen Yunchuang Century Technology Co., Ltd. EUT : Digital Player FCC ID: : 2BR75M303PRO Model Number : M303 Pro Report No. : HTT202508451F03 Reviewed By : Heber He 2 1. Duty Cycle 1.1 Test Result 1.1.1 Ant1 Ant1 Mode TX Type Frequency (MHz) T_on (ms) Period (ms) Duty Cycle (%) Duty Cycle Correction Factor (dB) Max. DC Variation (%) 802.11b SISO 2412 8.386 8.413 99.68 0.01 0.00 2437 8.384 8.414 99.64 0.02 0.04 2462 8.386 8.413 99.68 0.01 0.00 802.11g SISO 2412 1.394 1.428 97.62 0.10 0.03 2437 1.394 1.428 97.62 0.10 0.03 2462 1.393 1.428 97.55 0.11 0.04 802.11n (HT20) SISO 2412 1.174 1.211 96.94 0.13 0.03 2437 1.174 1.211 96.94 0.13 0.03 2462 1.175 1.212 96.95 0.13 0.03 802.11n (HT40) SISO 2422 0.588 0.623 94.38 0.25 0.03 2437 0.649 0.683 95.02 0.22 0.03 2452 0.649 0.683 95.02 0.22 0.03 3 1.2 Test Graph 1.2.1 Ant1 802.11b_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11b_MCH_2437MHz_Ant1 (SISO)_NTNV 4 802.11b_HCH_2462MHz_Ant1 (SISO)_NTNV 802.11g_LCH_2412MHz_Ant1 (SISO)_NTNV 5 802.11g_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11g_HCH_2462MHz_Ant1 (SISO)_NTNV 6 802.11n(HT20)_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11n(HT20)_MCH_2437MHz_Ant1 (SISO)_NTNV 7 802.11n(HT20)_HCH_2462MHz_Ant1 (SISO)_NTNV 802.11n(HT40)_LCH_2422MHz_Ant1 (SISO)_NTNV 8 802.11n(HT40)_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11n(HT40)_HCH_2452MHz_Ant1 (SISO)_NTNV 9 2. Bandwidth 2.1 Test Result 2.1.1 OBW Mode TX Type Frequency (MHz) ANT 99% Occupied Bandwidth (MHz) Verdict Result Limit 802.11b SISO 2412 1 14.164 / Pass 2437 1 14.210 / Pass 2462 1 14.260 / Pass 802.11g SISO 2412 1 17.624 / Pass 2437 1 17.871 / Pass 2462 1 17.720 / Pass 802.11n (HT20) SISO 2412 1 18.105 / Pass 2437 1 18.130 / Pass 2462 1 18.151 / Pass 802.11n (HT40) SISO 2422 1 36.603 / Pass 2437 1 36.573 / Pass 2452 1 36.478 / Pass 2.1.2 6dB BW Mode TX Type Frequency (MHz) ANT 6dB Bandwidth (MHz) Verdict Result Limit 802.11b SISO 2412 1 9.585 >=0.5 Pass 2437 1 9.980 >=0.5 Pass 2462 1 10.015 >=0.5 Pass 802.11g SISO 2412 1 16.603 >=0.5 Pass 2437 1 16.615 >=0.5 Pass 2462 1 16.628 >=0.5 Pass 802.11n (HT20) SISO 2412 1 17.826 >=0.5 Pass 2437 1 17.843 >=0.5 Pass 2462 1 17.839 >=0.5 Pass 802.11n (HT40) SISO 2422 1 36.468 >=0.5 Pass 2437 1 36.503 >=0.5 Pass 2452 1 36.487 >=0.5 Pass 10 2.2 Test Graph 2.2.1 OBW 802.11b_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11b_MCH_2437MHz_Ant1 (SISO)_NTNV 11 802.11b_HCH_2462MHz_Ant1 (SISO)_NTNV 802.11g_LCH_2412MHz_Ant1 (SISO)_NTNV 12 802.11g_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11g_HCH_2462MHz_Ant1 (SISO)_NTNV 13 802.11n(HT20)_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11n(HT20)_MCH_2437MHz_Ant1 (SISO)_NTNV 14 802.11n(HT20)_HCH_2462MHz_Ant1 (SISO)_NTNV 802.11n(HT40)_LCH_2422MHz_Ant1 (SISO)_NTNV 15 802.11n(HT40)_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11n(HT40)_HCH_2452MHz_Ant1 (SISO)_NTNV 16 2.2.2 6dB BW 802.11b_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11b_MCH_2437MHz_Ant1 (SISO)_NTNV 17 802.11b_HCH_2462MHz_Ant1 (SISO)_NTNV 802.11g_LCH_2412MHz_Ant1 (SISO)_NTNV 18 802.11g_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11g_HCH_2462MHz_Ant1 (SISO)_NTNV 19 802.11n(HT20)_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11n(HT20)_MCH_2437MHz_Ant1 (SISO)_NTNV 20 802.11n(HT20)_HCH_2462MHz_Ant1 (SISO)_NTNV 802.11n(HT40)_LCH_2422MHz_Ant1 (SISO)_NTNV 21 802.11n(HT40)_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11n(HT40)_HCH_2452MHz_Ant1 (SISO)_NTNV 22 3. Maximum Conducted Output Power 3.1 Test Result 3.1.1 Power Mode TX Type Frequency (MHz) Maximum Peak Conducted Output Power (dBm) Verdict ANT1 Limit 802.11b SISO 2412 3.78 <=30 Pass 2437 3.54 <=30 Pass 2462 3.57 <=30 Pass 802.11g SISO 2412 7.12 <=30 Pass 2437 6.58 <=30 Pass 2462 6.80 <=30 Pass 802.11n (HT20) SISO 2412 7.15 <=30 Pass 2437 6.85 <=30 Pass 2462 7.41 <=30 Pass 802.11n (HT40) SISO 2422 5.85 <=30 Pass 2437 7.64 <=30 Pass 2452 7.45 <=30 Pass 23 4. Maximum Power Spectral Density 4.1 Test Result 4.1.1 PSD Mode TX Type Frequency (MHz) Maximum PSD (dBm) Verdict ANT1 Limit 802.11b SISO 2412 -9.14 <=8 Pass 2437 -9.42 <=8 Pass 2462 -9.49 <=8 Pass 802.11g SISO 2412 -14.73 <=8 Pass 2437 -15.07 <=8 Pass 2462 -15.14 <=8 Pass 802.11n (HT20) SISO 2412 -14.60 <=8 Pass 2437 -15.09 <=8 Pass 2462 -14.30 <=8 Pass 802.11n (HT40) SISO 2422 -18.34 <=8 Pass 2437 -17.07 <=8 Pass 2452 -17.18 <=8 Pass 24 4.2 Test Graph 4.2.1 PSD 802.11b_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11b_MCH_2437MHz_Ant1 (SISO)_NTNV 25 802.11b_HCH_2462MHz_Ant1 (SISO)_NTNV 802.11g_LCH_2412MHz_Ant1 (SISO)_NTNV 26 802.11g_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11g_HCH_2462MHz_Ant1 (SISO)_NTNV 27 802.11n(HT20)_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11n(HT20)_MCH_2437MHz_Ant1 (SISO)_NTNV 28 802.11n(HT20)_HCH_2462MHz_Ant1 (SISO)_NTNV 802.11n(HT40)_LCH_2422MHz_Ant1 (SISO)_NTNV 29 802.11n(HT40)_MCH_2437MHz_Ant1 (SISO)_NTNV 802.11n(HT40)_HCH_2452MHz_Ant1 (SISO)_NTNV 30 5. Unwanted Emissions In Non-restricted Frequency Bands 5.1 Test Result 5.1.1 Ref Mode TX Type Frequency (MHz) ANT Level of Reference (dBm) 802.11b SISO 2412 1 -9.17 2437 1 -9.42 2462 1 -9.48 802.11g SISO 2412 1 -14.68 2437 1 -15.10 2462 1 -15.20 802.11n (HT20) SISO 2412 1 -14.69 2437 1 -15.06 2462 1 -14.40 802.11n (HT40) SISO 2422 1 -18.33 2437 1 -17.02 2452 1 -17.32 Note1: Refer to FCC Part 15.247 (d) and ANSI C63.10-2020, the channel contains the maximum PSD level was used to establish the reference level. 5.1.2 CSE Mode TX Type Frequency (MHz) ANT Level of Reference (dBm) Limit (dBm) Verdict 802.11b SISO 2412 1 -9.17 -29.17 Pass 2437 1 -9.17 -29.17 Pass 2462 1 -9.17 -29.17 Pass 802.11g SISO 2412 1 -14.68 -34.68 Pass 2437 1 -14.68 -34.68 Pass 2462 1 -14.68 -34.68 Pass 802.11n (HT20) SISO 2412 1 -14.40 -34.40 Pass 2437 1 -14.40 -34.40 Pass 2462 1 -14.40 -34.40 Pass 802.11n (HT40) SISO 2422 1 -17.02 -37.02 Pass 2437 1 -17.02 -37.02 Pass 2452 1 -17.02 -37.02 Pass Note1: Refer to FCC Part 15.247 (d) and ANSI C63.10-2020, the channel contains the maximum PSD level was used to establish the reference level. 31 5.2 Test Graph 5.2.1 Ref 802.11b_LCH_2412MHz_Ant1 (SISO)_NTNV 802.11b_MCH_2437MHz_Ant1 (SISO)_NTNV 32 802.11b_HCH_2462MHz_Ant1 (SISO)_NTNV 802.11g_LCH…

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1 Appendix RF Test Data for BLE Company: : Shenzhen Yunchuang Century Technology Co., Ltd. EUT : Digital Player FCC ID: : 2BR75M303PRO Model Number : M303 Pro Report No. : HTT202508451F02 Reviewed By : Heber He 2 1. Duty Cycle 1.1 Test Result 1.1.1 Ant1 Ant1 Mode TX Type Frequency (MHz) T_on (ms) Period (ms) Duty Cycle (%) Duty Cycle Correction Factor (dB) Max. DC Variation (%) 1M SISO 2402 0.384 0.625 61.44 2.12 0.00 2440 0.384 0.625 61.44 2.12 0.00 2480 0.385 0.625 61.60 2.10 0.03 3 1.2 Test Graph 1.2.1 Ant1 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 4 1M_HCH_2480MHz_Ant1_NTNV 5 2. Bandwidth 2.1 Test Result 2.1.1 OBW Mode TX Type Frequency (MHz) ANT 99% Occupied Bandwidth (MHz) Verdict Result Limit 1M SISO 2402 1 1.034 / Pass 2440 1 1.030 / Pass 2480 1 1.027 / Pass 2.1.2 6dB BW Mode TX Type Frequency (MHz) ANT 6dB Bandwidth (MHz) Verdict Result Limit 1M SISO 2402 1 0.663 >=0.5 Pass 2440 1 0.667 >=0.5 Pass 2480 1 0.669 >=0.5 Pass 6 2.2 Test Graph 2.2.1 OBW 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 7 1M_HCH_2480MHz_Ant1_NTNV 8 2.2.2 6dB BW 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 9 1M_HCH_2480MHz_Ant1_NTNV 10 3. Maximum Conducted Output Power 3.1 Test Result 3.1.1 Power Mode TX Type Frequency (MHz) Maximum Peak Conducted Output Power (dBm) Verdict ANT1 Limit 1M SISO 2402 5.51 <=30 Pass 2440 5.28 <=30 Pass 2480 5.41 <=30 Pass 11 4. Maximum Power Spectral Density 4.1 Test Result 4.1.1 PSD Mode TX Type Frequency (MHz) Maximum PSD (dBm) Verdict ANT1 Limit 1M SISO 2402 5.04 <=8 Pass 2440 4.81 <=8 Pass 2480 4.94 <=8 Pass 12 4.2 Test Graph 4.2.1 PSD 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 13 1M_HCH_2480MHz_Ant1_NTNV 14 5. Unwanted Emissions In Non-restricted Frequency Bands 5.1 Test Result 5.1.1 Ref Mode TX Type Frequency (MHz) ANT Level of Reference (dBm) 1M SISO 2402 1 5.03 2440 1 4.79 2480 1 4.94 Note1: Refer to FCC Part 15.247 (d) and ANSI C63.10-2020, the channel contains the maximum PSD level was used to establish the reference level. 5.1.2 CSE Mode TX Type Frequency (MHz) ANT Level of Reference (dBm) Limit (dBm) Verdict 1M SISO 2402 1 5.03 -14.97 Pass 2440 1 5.03 -14.97 Pass 2480 1 5.03 -14.97 Pass Note1: Refer to FCC Part 15.247 (d) and ANSI C63.10-2020, the channel contains the maximum PSD level was used to establish the reference level. 15 5.2 Test Graph 5.2.1 Ref 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV 16 1M_HCH_2480MHz_Ant1_NTNV 17 5.2.2 CSE 1M_LCH_2402MHz_Ant1_NTNV 1M_LCH_2402MHz_Ant1_NTNV 18 1M_MCH_2440MHz_Ant1_NTNV 1M_HCH_2480MHz_Ant1_NTNV 19 1M_HCH_2480MHz_Ant1_NTNV 20 6. Emissions at Restricted Band 1M_LCH_2402MHz_Ant1_NTNV 1M_HCH_2480MHz_Ant1_NTNV 21

Shenzhen HTT Technology Co., Ltd. Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China FCC PART 15 SUBPART C TEST REPORT FCC PART 15.247 Report Reference No. .................... : FCC ID. .......................................... : HTT202508451F03 2BR75M303PRO Compiled by ( position+printed name+signature) . : File administrators Supervised by ( position+printed name+signature) . : Project Engineer Approved by ( position+printed name+signature) . : RF Manager Date of issue .................................... : Mar. 10, 2026 Testing Laboratory Name ............. : Shenzhen HTT Technology Co.,Ltd. Address ............................................ : 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao’an District, Shenzhen, Guangdong, China Applicant’s name ........................... : Shenzhen Yunchuang Century Technology Co., Ltd. Address ............................................ : 7th Floor, Building A, Shuichan Sanwei Industrial Park, No. 5003 Bao’an Avenue, Sanwei Community, Hangcheng Street, Bao’an District, Shenzhen, China Test specification.......................... : Standard .......................................... : FCC Part 15.247 TRF Originator ................................. : Shenzhen HTT Technology Co.,Ltd. Shenzhen HTT Technology Co.,Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HTT Technology Co.,Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HTT 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. Test item description .................... : Digital Player Trade Mark ....................................... : N/A Manufacturer .................................... : Shenzhen Yunchuang Century Technology Co., Ltd. Model/Type reference ...................... : M303pro Listed Models ................................... : M1, M4, M5, M4S, M7, D22, A55, A66, A88, X50, X58, M303, M303 Pro, M501, M501 Pro, M502, M508, M508 Pro, M301, M301 Pro, M305, M308, M601, M602, M605, M608, M610, H12, H13, H18, W10, W11, W12, W16, W18, W19, G50, G53, G55, G60, G66, G68, G69, G88, DW10, DW20, DW30, DW50, DW60, DW80, DW90 Modulation Type .............................. : CCK/DSSS/OFDM Operation Frequency ....................... : From 2412 - 2462MHz Rating ............................................... : DC 3.7V From Battery and DC 5V From External Circuit Result ............................................... : PASS Report No.: HTT202508451F03 Page 2 of 39 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China T E S T R E P O R T Equipment under Test : Digital Player Model /Type : M303pro Listed Models : M1, M4, M5, M4S, M7, D22, A55, A66, A88, X50, X58, M303, M303 Pro, M501, M501 Pro, M502, M508, M508 Pro, M301, M301 Pro, M305, M308, M601, M602, M605, M608, M610, H12, H13, H18, W10, W11, W12, W16, W18, W19, G50, G53, G55, G60, G66, G68, G69, G88, DW10, DW20, DW30, DW50, DW60, DW80, DW90 Model difference : The PCB board, circuit, structure and internal of these models are the same, Only model number is different for these model. Applicant : Shenzhen Yunchuang Century Technology Co., Ltd. Address : 7th Floor, Building A, Shuichan Sanwei Industrial Park, No. 5003 Bao’an Avenue, Sanwei Community, Hangcheng Street, Bao’an District, Shenzhen, China Manufacturer : Shenzhen Yunchuang Century Technology Co., Ltd. Address : 7th Floor, Building A, Shuichan Sanwei Industrial Park, No. 5003 Bao’an Avenue, Sanwei Community, Hangcheng Street, Bao’an District, Shenzhen, China Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: HTT202508451F03 Page 3 of 39 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Contents 1 TEST STANDARDS .......................................................................................................................................... 4 2 SUMMARY ........................................................................................................................................................ 5 2.1 General Remarks .................................................................................................................................... 5 2.2 Product Description ................................................................................................................................. 5 2.3 Equipment Under Test ............................................................................................................................ 5 2.4 Short description of the Equipment under Test (EUT) ............................................................................ 5 2.5 EUT configuration .................................................................................................................................... 6 2.6 EUT operation mode ............................................................................................................................... 6 2.7 Block Diagram of Test Setup .................................................................................................................. 6 2.8 Related Submittal(s) / Grant (s) ...........…

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Shenzhen HTT Technology Co., Ltd. Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 1 of 10 RF Exposure evaluation Report Reference No. ..................... : FCC ID............................................. : HTT202508451F04 2BR75M303PRO Compiled by ( position+printed name+signature) . : File administrators Supervised by ( position+printed name+signature) . : Project Engineer Approved by ( position+printed name+signature) . : RF Manager Date of issue .................................... : Mar. 10, 2026 Testing Laboratory Name .............. : Shenzhen HTT Technology Co.,Ltd. Address............................................ : 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao’an District, Shenzhen, Guangdong, China Applicant’s name ............................ : Shenzhen Yunchuang Century Technology Co., Ltd. Address............................................ : 7th Floor, Building A, Shuichan Sanwei Industrial Park, No. 5003 Bao’an Avenue, Sanwei Community, Hangcheng Street, Bao’an District, Shenzhen, China Standard ........................................... : 47CFR §1.1310 47CFR §2.1093 KDB447498 D01 General RF Exposure Guidance v06 Shenzhen HTT Technology Co.,Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HTT Technology Co.,Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HTT 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. Test item description ..................... : Digital Player Manufacturer .................................... : Shenzhen Yunchuang Century Technology Co., Ltd. Trade Mark ........................................ N/A Model/Type reference ...................... : M303 Pro Rating ............................................... : DC 3.7V From Battery and DC 5V From External Circuit Result ............................................... : PASS Report No.: HTT202508451F04 Page 2 of 10 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 2 of 10 T E S T R E P O R T Equipment under Test : Digital Player Model /Type : M303 Pro Listed Models : M1,M4,M5,M4S,M7,D22,A55,A66,A88,X50,X58,M303,M501, M501 Pro,M502,M508,M508 Pro,M301,M301Pro,M305,M308, M601,M602,M605,M608,M610,H12,H13,H18,W10,W11,W12,W16, W18,W19,G50,G53,G55,G60,G66,G68,G69,G88,DW10, DW20, DW30, DW50,DW60,DW80,DW90 Applicant : Shenzhen Yunchuang Century Technology Co., Ltd. Address : 7th Floor, Building A, Shuichan Sanwei Industrial Park, No. 5003 Bao’an Avenue, Sanwei Community, Hangcheng Street, Bao’an District, Shenzhen, China Manufacturer : Shenzhen Yunchuang Century Technology Co., Ltd. Address : 7th Floor, Building A, Shuichan Sanwei Industrial Park, No. 5003 Bao’an Avenue, Sanwei Community, Hangcheng Street, Bao’an District, Shenzhen, China Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: HTT202508451F04 Page 3 of 10 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng…

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