New Bluetooth Long Standby Time with Replaced Battery

New Bluetooth Long Standby Time with Replaced Battery Features:
1) Technology: Bluetooth V2.0 (compatible with Bluetooth 1.1)
2) Remote pick-up and hang-up with 10 meters (no solid obstacle) working distance range
3) Frequency band: 2.40GHz ~ 2.48GHz
4) Talk time: up to 4 hours
5) Play time: up to 3--4hours
6) Standby time: up to 160 hours
7) Weight: about 6g
8)with incoming call indicator.
9) Battery: rechargeable ,can changed and with one backup batterySalse points : A New one with backup battery, Rechargeable battery ! Long standby time! two batteries you can change, like your mobile phone design , spare battery need charge
chipset:TAIWAN

Salse points:A New one with backup battery, Rechargeable battery ! Long standby time! two batteries you can change, like your mobile phone design , spare battery need charge.