Compatible with:iPad Air4 10.9 Product Features: 1. WIDE COMPAYABILITY: For use with all four major operating systems that support Bluetooth (iOS, Android, Mac OS and Windows), compatible with iPads, iPhones and Bluetooth-enabled tablets, laptops and cell phones, etc. 2.ULTRA-SLIM, LIGHT AND PORTABLE: This lightweight Bluetooth keyboard is designed for anyone who needs a portable keyboard for work or play and especially suitable for business trips. 3. RECHARGEABLE AND AUTOMATIC SLEEP MODE: The universal wireless bluetooth keyboard uses built-in lithium battery, can be easily recharged via USB cable, no need to change the battery. The built-in rechargeable battery is incredibly long lasting, standby time is approximately 6 months between charges. The Bluetooth wireless keyboard can automatically enter sleep mode to save power. 4.STABLE CONNECTION: Advanced Bluetooth technology provides a cable-free connection with an operating range of 10 meters. But for desktop computer without Bluetooth function, you need to insert a third-party Bluetooth adapter (not included) to install the Bluetooth driver before use. 5. COMFORTABLE and QUIET TYPING: Low-profile, quiet keys bring a whole new level of comfort to your fingertips. Plus, keep all your most-used functions and media controls closer than ever to dedicated Windows shortcut keys. Layout: AZERTY Size: 250*150mm*3mm Charging voltage: 5V Bluetooth Version: Bluetooth 3.0 Transmission distance: up to 10m Battery capacity: 650mAH Working time: 220 hours Standby time: 800 hours