ZEALOT S31 10W 3D HiFi Stereo Wireless Bluetooth Speaker, Support Hands-free / USB / AUX / TF Card(Black)

1. Bluetooth version: 5.0 2. Speaker: 5W*2 3. Transmission distance: about 10m 4. Frequency response: 20Hz-20KHz 5. SNR: >=85dB 6. Distortion: <1% 7. Working voltage: 3.7V 8. Charging voltage: DC5V 9. Charging interface: Micro USB 10. Battery capacity: 2000mAh lithium battery 11. Talking time: about 6h 12. Music time: about 4h 13. Standby time: >=30 days 14. Charging time: about 4h 15. USB output: 5V 1A 16. Size: 180*58*58mm 17. Weight: 0.33kg 18. TF extension: 32GB(not included)