Features: Low power and current consumption design, making battery used longer. Ergonomics design and ultra-thin keys, comfortable to operate. Light weight and compact design makes it both nice and practical. A perfect choice for you! Wireless Bluetooth 3.0 for fast pairing and wide range connectivity of up to 33 feet (10 meters/barrier-free). Works with any Bluetooth supported device with 3 major operating systems: iOS, Android Windows. 78 Keys with 12 multi-function keys. Built-in intelligent power management for power conservation. Low voltage alarm indicator keeps reminding replace battery.