81 keys including 1-touch Internet keys provides instant access to the Internet, e-mail, media player, volume control and more. Bluetooth® wireless technology allows you to operate the keyboard at up to a 33 feet transmission range. This wireless keyboard for your Windows, Mac or Chrome computer also works with your Android or iOS mobile devices. Bluetooth wireless device is required. Keyboard also works with your tablet and smartphone. Use with Bluetooth computers or mobile devices which support external keyboards (HID profile). Simply turn the Screen Selector dial to switch typing between up to 3 connected Bluetooth wireless devices. You'll find a familiar keyboard layout with all the shortcut keys you use the most. The integrated cradle holds your phone or tablet at just the right angle for you to read while you type. Applicable to most phones and tablets up to 10.5mm (0.4 inches) thick and 258mm (10 inches) wide. Windows, Mac, Android, iOS compatible. Requires 2 AA batteries (included).