... saving keyboard with sleep mode. Specifications 1, Executive standard: Bluetooth V3.0 2. Working distance: 10 meters 3, Modulation system: FHSS ... 4, Transmitting power: Class 2 5, Operating voltage: 3.0-5.0 6, Work current: <4.0MA 7, Standby current: < ... 9.7inchStyle: Case CoverOutside Material: LeatherKeyboard Cover: SiliconeBluetooth: 3.0 VersionColor in Total: Black/White/Brown/Pink/Red/Purple Case ...