Specifications: Bluetooth Edition: Bluetooth 3.0 and support latest Bluetooth 5.0 Dimensions: 285 x 120 x 6 mm / 11.2 x 4.7 x 0.2 inch Buttons: 78 keys (including 13 iPad hot keys) Weight: 217g / 7.65 oz Operating Range: Up to 10 meters / 33 feet The keyboard is made of superior plastic. Cross Platform Compatible Fully functional to all four major operating system: IOS / Android / MacOS / Windows, and features system-specific function keys for each operating systems. Any Bluetooth supported devices such as laptop, computer, tablet, smartphone can be easily paired and gain quick access to common functions, such as volume level, playback control, copy paste text, and more. Support devices including: Apple iPad 10.2 / iPad Air 3 10.5-inch (2019) / iPad mini 5 (2019) / iPad 9.7 inch iPad 6 2018, iPad 5 2017 / 10.5 inch, 11 inch and 12.9 inch iPad Pro, iPad Air / iPad mini / iPhone 11 11 Pro 11 Pro Max / iPhone XR Xs Xs Max X / 8 8 Plus, iPhone 7 7 Plus etc. Comfortable, quiet typing The whisper-quiet, low-profile keys bring a whole new level of comfort to your fingertips. What's more, keep all your most-used functions and media controls closer than ever Windows-dedicated hot keys. The construction of this scissors-kick keys can be used more than 3 million times continuously. Long Battery Life Energy-saving design and automatic sleep mode allow up to 4 months between battery changes. (based on 2 hours' non-stop use per day) (2 X AAA batteries included) Note: This keyboard will automatically go into power saving sleep mode after 30 mins of inactivity. Press any key and wait 2-3 seconds to wake the keyboard.