Eurekka Bluetooth Wireless Keyboard with Leather Case Stand Cover Ipad2 Ipad3 Ipad4 (White) Built-In wireless Bluetooth 2.0 silicone keyboard. With wireless operation distance up to 25 Feet. Keyboard works with most devices that have Bluetooth or USB adapter. QWERTY keyboard; Quiet keystrokes, Light Weight and Water and Dust Proof. Built-In Lithium Rechargeable battery lasts for approximately 45 hours per charge, charging Cable included. Plug in and play no software installation needed.