D Dingrich Ultra Slim Wireless Keyboard Compatible with iPad 9.7 2018, iPad 2017, iPad Pro, iPad Air 2/Air, iPad Mini 4/3/2/1, iPad 4/3/ 2 and Other Bluetooth Enabled Devices, Black UNIVERSAL COMPATIBILITY: The Wireless Bluetooth Keyboard works with iOS, Android, Mac and Windows 4 systems, your iPads, iPhones and Bluetooth-enabled Tablets, Laptops, and Mobile Phones. WONDERFUL SIZE: Smaller and lighter than traditional clunky keyboards while all function are included. A slimline design help save space. Big enough for your fingers to enjoy a wonderful typing, and small enough to fit in a bag and carry around. COMFORTABLE TYPING: The low-profile and matte finish keys bring you a quiet, comfortable typing experience and a sloped frame maximize precise and accurate typing with a stable scissor mechanism beneath each key. SUPERIOR LONGEVITY: The keyboard will automatically go into power-saving mode when no working more than 30minutes. When you restart to typing or using it, you need to wait for 2-3 seconds to let it responds. 30-days continuous use and automatic sleep mode allow up to half a year usage between battery changes. (2 X AAA Batteries, Not Included). PACKAGE AND EXCELLENT SUPPORT: 1xUltra Slim Bluetooth Keyboard, 1xUser Manual, and our excellent service. D Dingrich offer you one-year warranty and lightning customer service. PLEASE NOTE: 2xAAA batteries are not included in the package, and there is no micro-USB interface for the keyboard.