Fidelity&reg; Backlit Bluetooth Keyboard Wireless Bluetooth 3.0 Ultra-Slim Illuminated Keyboard for iOS / Android / iPad / iPad Air 2 / iPad Air / iPad mini 3 / Mini Retina / iPad mini / iPad 4,3,2 / iPhone / Samsung Galaxy Tab / Google Nexus / Windows / Android 3.0 and above / with Built-in lithium battery / 7 Color Options For key Backlights (Backlit Bluetooth, Black) Supports all 3 major operating systems: IOS, Android and Windows. Built-in rechargeable battery allows for up to 180 days of use on a single charge. Auto sleep feature ensures you get the most out of each charge.