T&G TG-671 Portable Wireless 3D Stereo Subwoofer Speaker with FMUSBLED 1. Bluetooth specification: V5.3 2. Output Power:5W 3. Frequency Range: 100HZ-18KHZ 4. Battery capacity:1200mAh 5. Playback time:2H 6. Battery voltage:3.7V 7. Adopting advanced Bluetooth audio decoding chips, supporting the connection of all Bluetooth devices; 8. LED lights with multiple flashing modes, which can flash with the music melody and switch with one click; 9. Mesh cover to prevent water, dust, and vibration from entering the speaker; 10. Call function, noise cancelling microphone, allowing you to answer calls without touching your phone; 11. Support FM broadcasting and can directly search the listening area of the radio station; 12. Supports AUX, and supports USB 2.0 hard drive; 13. TWS function, which can synchronously connect two speakers through one phone. 14. Package included: A. 1 x Bluetooth Speaker B. 1 x Charging Cable C. 1 x English and Chinese User Manual