Anker Wireless Bluetooth Keyboard Ultra Compact Slim Profile for iOS, Android, Windows and Mac with Rechargeable 6-Month Battery (Black) Ultra Compact: Takes up only two thirds the space of a traditional keyboard (11.3  5.0  0.5in). 6-Month Battery Life: Rechargeable lithium battery with an industry-high capacity of 800mAh lasts for 6 months between charges (based on 2 hours non-stop use per day). Comfortable & Intuitive: Low-profile, matte finish keys enhance your typing experience. Automatically connects to your last-connected device. Broad Compatibility: Use with all four major operating systems (iOS, Android, Mac OS and Windows). Package contents: Anker Ultra Compact Bluetooth Keyboard, 2.3ft Micro USB charging cable, welcome guide, our fan-favorite 18-month warranty.