1) Standard: Bluetooth 1.1/1.2 compliant 2) Chipset: BlueCore4-Audio Single Chip
3) Supporting: Call Reject/Transfer/Redial/Voice dial etc
4) Radio Performance: Class 2
5) One-Key Operation: Main function key
6) Carrier Frequency: 2.4-2.480GHz
7) Rx Sensitivity: <-75dBm
8) Spread Spectrum: 10 meters
9) Charger: Input 100-240VAC, Output 5VDC
10) Working Volt: 3.7V
11) Battery: Rechargeable Li-polymer Inside
12) Charging Time: 2-3hs
13) Talking Time: 4hs
14) Standby: 140hs