Features:

Work with all speakers. Make them become a Bluetooth wireless speaker. 

Bluetooth stereo receiving and transmit music to speaker.
Bluetooth V3.0, class II, up to 10 meters 
Plug and play, no need pairing code

Specification:

1, Bluetooth 3.0 compliant

2. Transmission distance not less than 10 m

3. With inbuilt mic. Can answer/hang up phone call

4, Compatible with all bluetooth device

5. Working time: 10 hours

6. Battery: 200mAh

7. Charging time 2 hours
8. Color: black, white

Item size: 50*30*11mm
Package size: 120*103*18mm
Net weight: 25g
Gross weight: 35g