1. Bluetooth version: Bluetooth V4.2
2. Transmission distance: 10 meters
3. Using time: 6-8 hours
4. Standby time: 4-6 minutes automatic shutdown
5. Battery: 70 mAh rechargeable lithium battery
6. Functions: adjust volume switch songs answer calls call rejection hang up Bluetooth phone replay Bluetooth broadcast Return voice tips power display inform call number smart shutdown simple broadcast English