Coffee Cup Bluetooth Speaker STD-VG01:

Function:
1. Wireless Bluetooth 3.0
2. Audio input

Specification:
1. Bluetooth version: 3.0
2. Output Power: 3W
3. Impedence: 4ohm
4. Audio interface: mini USB.
5. Working voltage: 5V
6. Frequency range: 200Hz~20KHz
7. Power supply mode: mini usb+400MAH battery inside
8. Material:ABS