Vktech Folio Leather Case Wireless Bluetooth Keyboard Backlight Combo for iPad 2/3/4 Black Built-in wireless Bluetooth 3.0 Modern style design, fashion keyboard & case for ipad 2/3/4 Built-in rechargeable lithium battery which lasts for approximately 10 hours percharge Professional Home key can access to multiple applications Light weight, quiet keystroke, waterproof, anti-dust design