Welcome to the store! 1. Uses a Bluetooth audio decoding chip to support connection with all Bluetooth devices. 2. Clear sound quality and strong volume, suitable for parties or outdoor gatherings. 3. Comes with a buckle shoulder strap and flashlight mode, providing great assistance for outdoor camping and sports. 4. Supports FM radio, can directly search for radio stations, and can directly read memory cards and U-disks. 5. Supports Micro USB charging, signal reception range is approximately 15m and stable transmission. Item Type: Speaker Material: ABS Bluetooth Version: Bluetooth V5.0 Frequency Response Range: 20HZ-18KHZ Signal-to-Noise Ratio: 85db Impedance: 4Ω Interface Type: Micro USB Charging Voltage: DC 5V-0.5-2A Bluetooth Signal Reception Range: Approx. 15m / 49.2ft Battery Capacity: 1200mAh How to Use: This product has multiple modes, which can be controlled by the M button on the device. Bluetooth: Turn on the power switch and it is directly in Bluetooth mode, and the audio signal of the Bluetooth name D10 can be played normally by using the mobile device to connect to it. Memory Card: Insert the memory card, turn on the power switch, and press the M button to switch modes, control with the buttons on the device, the triangular button is to pause playback, briefly press the +/- button to increase and decrease the volume, and long press the +/- button to switch songs. FM: Turn on the power switch and press the M button to adjust to FM mode, control with the buttons on the device and the +/- button for frequency modulation. USB: Connect to the USB drive, turn on the power switch and press the M button to switch to USB mode, control with the buttons on the device, the triangular button is to pause playback, briefly press the +/- button to increase or decrease the volume, and long press the +/- button to switch songs. Flashlight function: After turning on the power switch, long press the M button to turn the light on and off. This product comes with a strap that can be buckled on both sides for easier carrying. 1 x Speaker 1 x Strap 1 x Micro USB Cable Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately, and we will provide you with the best solution!