Bluetooth v1.2 specifications, class-II Chipset:TaiWan TERAX Operating range: up to 10m Frequency: 2.40 to 2.48GHz Talk time: 4 to 6 hours Standby time: 120 hours Charging time: 20 to 40 minutes Battery type: rechargeable Li-polymer battery Dimensions: 37 x 17 x 10mm Weight: 7g |