1) BT protocol: version 2.0 2) Frequency: 2.4 GHz 3) BT range: 10meters. 4) Net weight: 14g 5) Power supply:DC5.1V/120Ma 6) Working volt: 3.7V 7) Battery: rechargeable Li-Ion battery 8) Talking time:up to 5.5 hours 9) Standby time: up to 120 hours 10) Charging time: about 2 hours. |