1. Rechargeable 300mAh lithium ion battery;
2. Talking time :7-8 hours;
3. Music playing time :5-8 hours;
4. Standby time :180 hours;
5. Charging time :2 hours;
6. Charging voltage :DC 4.75-5.25V
7. Transmission distance: more than 10 meters
8. Driver size: 40mm
9. Plug :Micro 5 PIN USB Charger
10. silk printing,color printing,water transfer
printing