Bluetooth keyboard and leather protective case two in one design Detachable keyboard, the keyboard can be used on its own, convenient and practical Supporting stand for hands-free movies watching and web surfing Built-in rechargeable battery, can charge the keyboard via the attached USB cable Specification: Bluetooth version: V3.0 Effective operating distance: 10 meters Modulation method: GFSK Working voltage: 3.0-4.2V Working current: <2.5mA Standby current: <0.3mA Sleep current: <40uA Charging current: >200mA Standby time: >100 days Charging time: 3-4 hours Lithium battery capacity: 200mAh Sustainable working hours: 100 hours Lithium battery life: 3 years Button force: 80 ±10g Button life: 5 million times Working temperature: -10 to +55℃ Compatible with:Lenovo Tab K10 TB-X6C6XCompatible with Lenovo Tab K10 Lenovo Package included 1 x Bluetooth Keyboard (with Leather Case) 1 x Charging Cable Other items not included Specifications Brand N/A Color Black Packaging Type Colored Box Gross Weight 0.672kg Volume Weight 0.290kg Package Length 28.400cm Package Width 19.000cm Package Height 2.400cm