... XP, Windows Vista, Win7).Main Features:1,Bluetooth Version: Bluetooth V3.0, in BROADCOM 20730 chipset.2, 66keys design, with combo multi ... 3,Battery capacity: 310ma4,Working Current: <1.8ma5, Standby current: <0.2ma6,Charging time: 3-4hours7, RF output power: up to ... , good for your health with lowest radiates.8, Operaion distance: 0-10m9, Dimension: 260*91*11mm10, Net weight: 175gCompany Introduction: ...