Bluetooth connection makes you enjoy wide range wireless control. 78 Keys with 12 multi-function keys. Super slim size, comfortable and ergonomic design. Built-in intelligent power manage software for power conservation. Built-in software solutions with Bluetooth human interface device. No wire, no receiver, you can get up to 10 meters transmission distance with Bluetooth technology. Lightweight with quiet keystrokes, allowing someone to type without disturbing others. With on/ off switch to save power and indicator light to show power status. Type: Keyboard Connect Type: Bluetooth Wireless Bluetooth Version: 3.0 Wireless Distance: 10m Battery Type: 2 x AA Battery, Not Included System: Mac OS, iOS, Android, Windows Range of Frequency: 16GHz Spectrum Operating Voltage: 3.3Vdc (power by couple of Tripple Abattery) Operation Current: Standby Current: 1.2mA Sleep Current: Storage Temperature: -40~+125 degree Size: 285 x 120 x 19 mm / 11.22 x 4.72 x 0.75 inch Net Weight: 288 g/ 10.16 oz Color: As show in the picture Note: First row F1 – F12 are designed for APPLE use only. Some F-keys might not work for Windows base or Androids.