2BDCS-ST-290Bluetooth speaker

TF Type-c USB M TF卡插孔 USB插孔 TYPE-C充电孔 FM模式切换功能 短按上一曲 长按加音量 灯光模式键7种切换 开机/关机/暂停 短按下一曲 长按减音量 功能说明 使用说明 1.开机关机健，长按开机,指示灯闪烁并发出提示音 进入蓝牙配对模式，长按关机 2.蓝牙连接，搜索配对连接，连接后您会听到提示 音表示蓝牙已连接 3.长按降低音量，短按切换上一曲目 4.长按增加音量，短按切换下一曲目 5.U盘接口 6.TF卡槽 7.Type-c充电插口 8.M：FM/TF/USB短按切换，长按断开/连接蓝牙 电源使用说明: 1.当电池电量过低时，产品会发出提示音。 2.充电时，红灯亮起。充满电大约需要1到2小时， 红灯会自动熄灭。 3.如果设备长时间不使用，应至少每两个月充电一 次以保护电池并延长其使用寿命。 4.正常连续使用时间约为6至8小时。 注意事项: 1.请在正常环境下存放或使用本产品,不能在火烤或 者过热的环境下使用 2.请勿将本产品投入到任何液体中已经将任何液体 泼溅到此产品上 3.请使用此产品要求的额定输入电压的充电器充电 (注意不能超过5V 2A) 产品参数 保修卡 姓名: 电话: 地址: 问题: 功能说明 TF Type-c USB M TYPE-C ·FM mode switching function ·Press a song briefly ·Longpress to increase the sound ·There are 7 types of light mode keys for switching ·Power on ·power off ·Pause ·Press a short tune ·Press and hold to reduce the sound FUNCTION DESCRIPTION: INSTRUCTIONS FOR USE: 1.Press and hold the power button to turn on the device. The indicator light will flash and a prompt sound will be emitted to enter the Bluetooth pairing mode. Press and hold the power button to turn it off 2. Bluetooth connection, search for pairing connection. After connection, you will hear a prompt tone indicating that the Bluetooth is connected 3. Long press to lower the volume, short press to switch to the previous track 4. Long press to increase the volume, short press to switch to the next track 5. Usb flash drive interface 6.Tf card slot 7.Type-c charging port 8.M: Short press FM/TF/USB to switch, long press to disconnect/connect to Bluetooth TF card slot USB jack INSTRUCTIONS FOR USE: PRECAUTIONS: 1.When the battery power is too low, the product will emit a prompt sound. 2. When charging, the red light is on. It takes about 1 to 2 hours to fully charge and the red light will go out automatically. 3. If the device is not used for a long time, it should be charged at least once every two months to protect the battery and extend its service life. 4.The normal continuous usage time is approximately 6 to 8 hours. 1. Please store or use this product under normal conditions. Do not use it in an environment exposed to fire or excessive heat 2. Do not pour this product into any liquid or splash any liquid onto it 3. Please charge with the charger with the rated input voltage required for this product (note that it should not exceed 5V 2A). PRODUCT PARAMETERS: WARRANTY CARD: USER NAME: CONTACT NUMBER: USER ADDRESS: FAULT DESCRIPTION: 产品名称:ST-290蓝牙版本:5.3 材料:ABS产品尺寸:129*80*80mm 电池容量:1200mAh工作范围:最大10M 充电时间:2hrs工作时间:6-8hrs 喇叭:外磁52mm 4欧5W*1 支持功能：TF/USB/LED灯/FM Product Name ：ST-290Bluetooth version ：5.3 Material：ABSProduct size: 129*80*80mm Battery capacity：1200mAhWorking range：10M Charging time：2 hoursWorking hours：6-8 hours Speaker：External magnetic 52mm 4Ω5W*1 Supported functions：TF/USB/LED light /FM 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.

Shenzhen HTT Technology Co., Ltd. Report No.: HTT202512543 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: Bluetooth speaker Model No.: ST-290 EUT Constructional Details External Photo Report No.: HTT202512543 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 Report No.: HTT202512543 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.: HTT202512543 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------

Label and Location Size: L: 1.0cm*W: 0.2cm Label and Location FCC ID : 2BDCS-ST-290

Shenzhen HTT Technology Co., Ltd. Report No.: HTT202512543 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 3 Product Name: Bluetooth speaker Model No.: ST-290 EUT Constructional Details Internal Photo Report No.: HTT202512543 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 3 ANTENNA Report No.: HTT202512543 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 3 ------End------

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 8 RF Exposure evaluation Report Reference No. ..................... : FCC ID............................................. : HTT202512543F02 2BDCS-ST-290 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 .................................... : Dec. 18, 2025 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 ............................ : Dongguan Shengxiang Technology Co.Ltd Address ............................................ : 2F, No.37, Xiangfeng Street, Yangwucun, Dalingshan,Dongguan, Guangdong 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 ..................... : Bluetooth speaker Manufacturer .................................... : Dongguan Shengxiang Technology Co.Ltd Trade Mark ........................................ N/A Model/Type reference ...................... : ST-290 Rating ............................................... : DC 3.7V From Battery and DC 5V From External Circuit Result ............................................... : PASS Report No.: HTT202512543F02 Page 2 of 8 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 8 T E S T R E P O R T Equipment under Test : Bluetooth speaker Model /Type : ST-290 Listed Models : ST-291,ST-292 Applicant : Dongguan Shengxiang Technology Co.Ltd Address : 2F, No.37, Xiangfeng Street, Yangwucun, Dalingshan,Dongguan, Guangdong China Manufacturer : Dongguan Shengxiang Technology Co.Ltd Address : 2F, No.37, Xiangfeng Street, Yangwucun, Dalingshan,Dongguan, Guangdong 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.: HTT202512543F02 Page 3 of 8 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 3 of 8 Contents 1 T E S T S T A N D A R D S ................................................... 4 2 S U M M A R Y .............................................................. 5 2.1 General Remarks 5 2.2 Product Description 5 2.3 Special Accessories 5 2.4 Modifications 5 3 T E S T E N V I R O N M E N T 6 3.1 Address of the test laboratory 6 3.2 Test Facility 6 3.3 Statement of the measurement uncertainty 6 4 T E S T L I M I T 7 4.1 Requirement 7 4.2 Conducted Power Results 8 4.3 Manufacturing tolerance 8 4.4 Evaluation Result 8 4.5 Simultaneous Transmission for SAR Exclusion 8 5 C O N C L U S I O N 8 Report No.: HTT202512543F02 Page 4 of 8 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 4 of 8 1 T E S T S T A N D A R D S The tests were performed according to following standards: ANSI C95.1–1999: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz. FCC KDB 447498 D01 General RF Exposure Guidance v06: Mobile and Portable Device, RF Exposure, Equipment Authorization Procedures. FCC CFR 47 part1 1.1310: Radiofrequency radiation exposure limits. FCC CFR 47 part2 2.1093: Radiofrequency radiation exposure evaluation: portable devices Report No.: HTT202512543F02 Page 5 of 8 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 5 of 8 2 S U M M A R Y 2.1 General Remarks Date of receipt of test sample : Dec. 11, 2025 Testing commenced on : Dec. 11, 2025 Testing concluded on : Dec. 18, 2025 2.2 Product Description Product description: Bluetooth speaker Model/Type reference: ST-290 Power supply: DC 3.7V From Battery and DC 5V From External Circuit Adapter Information (Auxiliary test provided by the lab): Mode: GS-0500200 Input: AC100-240V, 50/60Hz, 0.3A max Output: DC 5V, 2A Testing sample ID： HTT202512543-1# (Engineer sample) HTT202512543-2# (Normal sample) Hardware version: / Software version: / Bluetooth : Supported Type: Bluetooth BR/EDR Modulation: GFSK, π/4DQPSK, 8DPSK Operation frequency: 2402MHz~2480MHz Channel number: 79 Channel separation: 1MHz Antenna type: PCB Antenna Antenna gain: -0.58 dBi 2.3 Special Accessories The following is the EUT test of the auxiliary equipment provided by the laboratory: Description Manufacturer Model Technical Parameters Certificate Provi…

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Inverted F Antenna Specification Summary ANT SPECITEM 2.4G ANTModel Name VerticalHorizontal 2500MHz2400MHz2500MHz2400MHz Center Frequency -1.86-2.46-5.25-0.58-0.76-1.26 -0.58dBMAX. Gain Horizontal and VerticalPolarization Azimuth Beam Pattern Omni-directional 50 OhmImpedance 38.20mmAntenna Length Manufacture Antenna Photo & Length (mm) Dongguan Shengxiang Technology Co., Ltd Add: 2F, No.37, Xiangfeng Street, Yangwucun, Dalingshan, Dongguan, Guangdong,China 2450MHz2450MHz Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain(dB) Frequency (MHz) Max Min Avg 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) Max Min Avg 2400 -5.2537 -22.1424 -12.4294 2450 -2.4652 -24.5837 -10.4702 2500 -1.86120 -29.5214 -9.20432

1 Appendix RF Test Data for BT Company: : Dongguan Shengxiang Technology Co.Ltd EUT : Bluetooth speaker FCC ID: : 2BDCS-ST-290 Model Number : ST-290 Report No. : HTT202512543F01 Reviewed By : Heber He 2 1. Duty Cycle 1.1 Test Result 1.1.1 Ant1 Ant1 Mode TX Type Frequency (MHz) Packet Type T_on (ms) Period (ms) Duty Cycle (%) Duty Cycle Correction Factor (dB) Max. DC Variation (%) GFSK SISO 2402 DH5 2.914 3.750 77.71 1.10 0.03 2441 DH5 2.914 3.750 77.71 1.10 0.03 2480 DH5 2.913 3.749 77.70 1.10 0.04 Pi/4DQPSK SISO 2402 2DH5 2.921 3.751 77.87 1.09 0.03 2441 2DH5 2.920 3.749 77.89 1.09 0.01 2480 2DH5 2.919 3.749 77.86 1.09 0.01 8DPSK SISO 2402 3DH5 2.922 3.750 77.92 1.08 0.03 2441 3DH5 2.923 3.751 77.93 1.08 0.03 2480 3DH5 2.923 3.750 77.95 1.08 0.03 3 1.2 Test Graph 1.2.1 Ant1 GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV 4 GFSK_DH5_HCH_2480MHz_Ant1_NTNV Pi/4DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV 5 Pi/4DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV Pi/4DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV 6 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV 7 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV 8 2. Bandwidth 2.1 Test Result 2.1.1 OBW Mode TX Type Frequency (MHz) Packet Type ANT 99% Occupied Bandwidth (MHz) Verdict Result Limit GFSK SISO 2402 DH5 1 0.852 / Pass 2441 DH5 1 0.849 / Pass 2480 DH5 1 0.851 / Pass Pi/4DQPSK SISO 2402 2DH5 1 1.157 / Pass 2441 2DH5 1 1.148 / Pass 2480 2DH5 1 1.164 / Pass 8DPSK SISO 2402 3DH5 1 1.163 / Pass 2441 3DH5 1 1.158 / Pass 2480 3DH5 1 1.163 / Pass 2.1.2 20dB BW Mode TX Type Frequency (MHz) Packet Type ANT 20dB Bandwidth (MHz) Verdict Result Limit GFSK SISO 2402 DH5 1 0.957 / Pass 2441 DH5 1 0.938 / Pass 2480 DH5 1 0.939 / Pass Pi/4DQPSK SISO 2402 2DH5 1 1.275 / Pass 2441 2DH5 1 1.259 / Pass 2480 2DH5 1 1.263 / Pass 8DPSK SISO 2402 3DH5 1 1.298 / Pass 2441 3DH5 1 1.278 / Pass 2480 3DH5 1 1.275 / Pass 9 2.2 Test Graph 2.2.1 OBW GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV 10 GFSK_DH5_HCH_2480MHz_Ant1_NTNV Pi/4DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV 11 Pi/4DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV Pi/4DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV 12 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV 13 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV 14 2.2.2 20dB BW GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV 15 GFSK_DH5_HCH_2480MHz_Ant1_NTNV Pi/4DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV 16 Pi/4DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV Pi/4DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV 17 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV 18 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV 19 3. Maximum Conducted Output Power 3.1 Test Result 3.1.1 Power Mode TX Type Frequency (MHz) Packet Type Maximum Peak Conducted Output Power (dBm) Verdict ANT1 Limit GFSK SISO 2402 DH5 1.94 <=30 Pass 2441 DH5 1.77 <=30 Pass 2480 DH5 1.01 <=30 Pass Pi/4DQPSK SISO 2402 2DH5 2.71 <=20.97 Pass 2441 2DH5 2.57 <=20.97 Pass 2480 2DH5 1.82 <=20.97 Pass 8DPSK SISO 2402 3DH5 3.04 <=20.97 Pass 2441 3DH5 2.93 <=20.97 Pass 2480 3DH5 2.15 <=20.97 Pass 20 4. Carrier Frequency Separation 4.1 Test Result 4.1.1 Ant1 Ant1 Mode TX Type Frequency (MHz) Packet Type Channel Separation (MHz) 20dB Bandwidth (MHz) Limit (MHz) Verdict GFSK SISO HOPP DH5 1.010 0.957 >=0.957 Pass Pi/4DQPSK SISO HOPP 2DH5 1.001 1.275 >=0.85 Pass 8DPSK SISO HOPP 3DH5 1.001 1.298 >=0.865 Pass 21 4.2 Test Graph 4.2.1 Ant1 GFSK_DH5_HOPP_Ant1_NTNV Pi/4DQPSK_2DH5_HOPP_Ant1_NTNV 22 8DPSK_3DH5_HOPP_Ant1_NTNV 23 5. Number of Hopping Frequencies 5.1 Test Result 5.1.1 HoppNum Mode TX Type Frequency (MHz) Packet Type Num of Hopping Frequencies Verdict ANT1 Limit GFSK SISO HOPP DH5 79 >=15 Pass Pi/4DQPSK SISO HOPP 2DH5 79 >=15 Pass 8DPSK SISO HOPP 3DH5 79 >=15 Pass 24 5.2 Test Graph 5.2.1 HoppNum GFSK_DH5_HOPP_Ant1_NTNV Pi/4DQPSK_2DH5_HOPP_Ant1_NTNV 25 8DPSK_3DH5_HOPP_Ant1_NTNV 26 6. Time of Occupancy (Dwell Time) 6.1 Test Result 6.1.1 Ant1 Ant1 Mode TX Type Frequency (MHz) Packet Type Duration of Single Pulse (ms) Observation Period (s) Num of Pulse in Observation Period Dwell Time (ms) Limit (ms) Verdict GFSK SISO HOPP DH1 0.414 31.600 320 132.480 <=400 Pass DH3 1.670 31.600 161 268.870 <=400 Pass DH5 2.916 31.600 100 291.600 <=400 Pass Pi/4DQPSK SISO HOPP 2DH1 0.422 31.600 320 135.040 <=400 Pass 2DH3 1.676 31.600 158 264.808 <=400 Pass 2DH5 2.924 31.600 108 315.792 <=400 Pass 8DPSK SISO HOPP 3DH1 0.424 31.600 320 135.680 <=400 Pass 3DH3 1.674 31.600 149 249.426 <=400 Pass 3DH5 2.926 31.600 102 298.452 <=400 Pass 27 6.2 Test Graph 6.2.1 Ant1 GFSK_DH1_HOPP_Ant1_NTNV GFSK_DH1_HOPP_Ant1_NTNV 28 GFSK_DH3_HOPP_Ant1_NTNV GFSK_DH3_HOPP_Ant1_NTNV 29 GFSK_DH5_HOPP_Ant1_NTNV GFSK_DH5_HOPP_Ant1_NTNV 30 Pi/4DQPSK_2DH1_HOPP_Ant1_NTNV Pi/4DQPSK_2DH1_HOPP_Ant1_NTNV 31 Pi/4DQPSK_2DH3_HOPP_Ant1_NTNV Pi/4DQPSK_2DH3_HOPP_Ant1_NTNV 32 Pi/4DQPSK_2DH5_HOPP_Ant1_NTNV Pi/4DQPSK_2DH5_HOPP_Ant1_NTNV 33 8DPSK_3DH1_HOPP_Ant1_NTNV 8DPSK_3DH1_HOPP_Ant1_NTNV 34 8DPSK_3DH3_HOPP_Ant1_NTNV 8DPSK_3DH3_HOPP_Ant1_NTNV 35 8DPSK_3DH5_HOPP_Ant1_NTNV 8DPSK_3DH5_HOPP_Ant1_NTNV 36 7. Unwanted Emissions In Non-restricted Frequency Bands 7.1 Test Result 7.1.1 Ref Mode TX Type Frequency (MHz) Packet Type ANT Level of Reference (dBm) GFSK SISO 2402 DH5 1 1.46 2441 DH5 1 1.25 2480 DH5 1 0.51 HOPP DH5 1 1.49 1.49 Pi/4DQPSK SISO 2402 2DH5 1 1.41 2441 2DH5 1 1.21 2480 2DH5 1 0.23 HOPP 2DH5 1 1.47 1.47 8DPSK SISO 2402 3DH5 1 1.29 2441 3DH5 1 1.25 2480 3DH5 1 0.46 HOPP 3DH5 1 1.41 1.41 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. 7.1.2 CSE Mode TX Type Frequency (MHz) Packet Type ANT Level of Reference (dBm) Limit (dBm) Verdict GFSK SISO 2402 DH5 1 1.46 -18.54 Pass 2441 DH5 1 1.25 -18.75 Pass 2480 DH5 1 0.51 -19.49 Pass HOPP DH5 1 1.49 -18.51 Pass 1.49 -18.51 Pass Pi/4DQPSK SISO 2402 2DH5 1 1.41 -18.59 Pass 2441 2DH5 1 1.21 -18.79 Pass 2480 2DH5 1 0.23 -19.77 Pass HOPP 2DH5 1 1.47 -18.53 Pass 1.47 -18.53 Pass 8DPSK SISO 2402 3DH5 1 1.29 -18.71 Pass 2441 3DH5 1 1.25 -18.75 Pass 2480 3DH5 1 0.46 -19.54 Pass HOPP 3DH5 1 1.41 -…

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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 FCC PART 15 SUBPART C TEST REPORT FCC PART 15.247 Report Reference No. .................... : FCC ID. ........................................... : HTT202512543F01 2BDCS-ST-290 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 .................................... : Dec. 18, 2025 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 ........................... : Dongguan Shengxiang Technology Co.Ltd Address ............................................ : 2F, No.37, Xiangfeng Street, Yangwucun, Dalingshan,Dongguan, Guangdong 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. Test item description ..................... : Bluetooth speaker Trade Mark ....................................... : N/A Manufacturer .................................. : Dongguan Shengxiang Technology Co.Ltd Model/Type reference ...................... : ST-290 Listed Models ................................... : ST-291,ST-292 Modulation ....................................... : GFSK, Π/4DQPSK, 8DPSK Frequency ......................................... From 2402MHz to 2480MHz Ratings ............................................. : DC 3.7V From Battery and DC 5V From External Circuit Result ............................................... : PASS Report No.: HTT202512543F01 Page 2 of 30 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 : Bluetooth speaker Model /Type : ST-290 Listed Models : ST-291,ST-292 Applicant : Dongguan Shengxiang Technology Co.Ltd Address : 2F, No.37, Xiangfeng Street, Yangwucun, Dalingshan,Dongguan, Guangdong China Manufacturer : Dongguan Shengxiang Technology Co.Ltd Address : 2F, No.37, Xiangfeng Street, Yangwucun, Dalingshan,Dongguan, Guangdong 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.: HTT202512543F01 Page 3 of 30 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) .............................................................................................................. 6 2.9 Modifications ........................................................................................................................................... 6 3 TEST ENVIRONMENT ...................................................................................................................................... 7 3.1 Address of the test laboratory ................................................................................................................. 7 3.2 Test Facility ............................................................................................................................................. 7 3.3 Environmental conditions ........................................................................................................................ 7 3.4 Summary of measurement results .......................................................................................…

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Shenzhen HTT Technology Co., Ltd. Report No.: HTT202512543 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: Bluetooth speaker Model No.: ST-290 Test Setup Photo Radiated Emission Report No.: HTT202512543 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------