JETech 2155 Universal Bluetooth Wireless Keyboard - Black Bluetooth technology. Works with iOS, Android, Mac and Windows, with shortcut keys for all four systems Compact and portable: smaller than traditional clunky keyboards while all function included. Comfortable Keys: Type quietly and effortlessly on comfortable, low-profile keys Super long battery life: over three months (normal usage per day) with power-saving mode and space for two AAA batteries (not included). Package includes: JETech bluetooth keyboard, instruction manual, life-time warranty card