1.Operating frequency range:2.40GHz-2.48GHz
2.Bluetooth V1.2 compliant
3.Transmitting power: Glass2
4.Supports Headset & Handsfree Profiles
5.Range of wireless connection: 10 meters
6.Built-in chargeable 420mAH lithium battery
7.Talk time: 6 hours;
8.Stand-by time: 250 hours
9.with microphone 
10.Charging Time:2-3 hours