1. Bluetooth V4.2 Speaker;
2. With Microphone for Hands-free;
3. Internal Rechargeable Battery:
4. 3.7V 1200mAh;
5. Volume & Order Control;
6. Power: USB 5V powered;
7. Power Output: 5W * 2
8. Driver Unit: 57mm 4Ω 5W
9. Frequency Response: 90Hz - 20Khz
10. Dimensions ：215*85*121mm