Specifications:
1) Bluetooth specification: version 1.1
2) Frequency range: 2.4GHz ISM spectrum
3) Supported profiles: headset and hand-free profiles
4) Output power class: Piconet protocol implemented
5) Point to point class: 2 - 10m
6) Security: built-in polymer battery
7) Talking time: up to 4 - 5 hours
8) Standby time: up to 128 hours
9) Nominal charging time: within 2.5 - 3 hours
10) Weight: 16g