Color Black Brand N/A Quantity 1 Piece Material PU leather + ABS Powered By Built-in Battery Compatible Brand Lenovo Wireless or Wired Bluetooth Bluetooth Version V3.0 Interface OthersMicro USB Keys 59 Operating Range 10 m Charging Time 2~2.5 Hour Battery Capacity 450 mAh Battery Number No Battery included or not Yes Supports System Android 4.x Certification CE FCC RoHS Other Features Super slim & light-weighted; Soft touch & extreme quiet; Elegant outlook; Durable cover; State of art technology; User friendly; Built-in rechargeable Li-ion battery Packing List 1 x PU protective case 1 x Removable Bluetooth keyboard 1 x USB charging cable (72.5cm) 1 x English user manual