Black Wireless Bluetooth Waterproof Keyboard and Leather Case Cover Stand for Apple iPad Mini Built-in wireless Bluetooth 2.0 silicone keyboard Built-in high capacity Rechargeable lithium battery Specially design for IPAD Mini, It will be more convenient to carry with IPAD Mini bag. Light weight quiet, keystrokes, waterproof and dust-proof design Charging time: 4-4.5 hours(8 hour for the first three charging)