Technology
Standard: Bluetooth V2.0
Chipset: BlueCore4-Audio Single Chip
Compatibility: General Headset and Bluetooth Cell Phone
Radio Performance: Class 2
Carrier Frequency: 2.4-2.480GHz
Rx Sensitivity: <-75dBm
Spread Spectrum: 10 meters
Voice dial, receive, end or reject calls, adjust the volume

Powder
Charger: Input 100-240VAC, Output 5VDC
Working Volt: 3.7V
Battery: Rechargeable Li-polymer Inside
Charging Time: 2-5hs
Talking Time: 4hs
Standby: 110hs