1) Bluetooth V2.0 compliant 2) The longest standby time: over 120 hours 3) The longest talking time: over 5 hours 4) Working range: indoor 5 meters, outdoor 10 meters 5) Battery type: rechargeable poly Li-ion battery 6) Weight: 12g 7) Output level: 0dBm 8) Frequency: 2.4GHz 9) Channels: 79 10) Dimensions: 59 x 22.7 x 22.5mm