• Bluetooth V2.0+EDR. Operation Range: 10 meters (extended).
• Talk time: up to 5 hours, Standby time: up to 150 hours, Charging time: 1.5 – 2.5 hours
• Battery: Rechargeable polymer battery, Size: 45mm x 18mm, Weight: 10g, BQB, FCC, CE and RoHs approved.
• Function: Answer / End / Reject call, Comes with On/Off button. Last number redial, Voice dial activate (when supported by mobile phone)
• Mute Control / Volume adjustment, Call waiting, Transfer a call between mobile and headset, Includes removable earhook & AC power adapter

Wireless Mini Bluetooth Handsfree Headset for HTC G1 Google phone, Touch Diamond, Shadow, Touch, XV6900, 8925 Tilt, SMT-5800, Fusion, PPC-6800, XV6800, Mogul, Wing, 8525, Dash, S620 Excalibur, 3125, SDA, 2125, MDA, 8125 Smartphone

Here is the original:
Wireless Mini Bluetooth Handsfree Headset for HTC G1 Google phone, Touch Diamond, Shadow, Touch, XV6900, 8925 Tilt, SMT-5800, Fusion, PPC-6800, XV6800, Mogul, Wing, 8525, Dash, S620 Excalibur, 3125, SDA, 2125, MDA, 8125 Smartphone