The Ultra-thin Sliding Bluetooth Keyboard for iPhone 4 frees you from the pains of having to use an on-screen keyboard! It easily pairs over Bluetooth using wireless connectivity and features a slide-out QWERTY keyboard that includes Search and Home buttons. It's powered by a lithium rechargeable battery and is charged via its Mini USB port. Its on/off switch lets you conserve its battery life, too! Simply snap in your iPhone 4 (AT&T or Verizon), pair your devices, and you've got a fully functional QWERTY keyboard ready to slide out whenever you need it!