Zoook Bluetooth Audio Adapter ZB-BR165 (Blue)
 
Bluetooth Version 3.0
Charging voltage: DC 5V
Battery Voltage: DC 3.7V-4.2V
Play music Current:
Receiver distance: ≤ 10 m without obstacles
Battery capacity: ≤ 220Ma
Theoretical work time: 600 minutes
Standby Time: About 100 Hours
Works With any Speakers with 3.5mm plug, Car Stereo System,Headphones,Earphones