Targus Universal Foldable Keyboard for Android Devices, Black (AKF001US) Compatibility - Designed for use with tablets or smartphones running on Android 3.1 or higher Functionality - Foldable, lightweight design for easy transport; Full sized, optimized keyboard; Case converts into a stand for landscape/portrait viewing; Bluetooth 3.0 for easy pairing; Rechargeable battery; Shortcut buttons to enhance device experience ROHS Compliant - Yes Rechargeable lithium battery with USB to Micro USB charging cable included. No separate AA or AAA batteries needed. Limited warranty does not cover products purchased from 3rd party sellers