Details Material - PlasticInterface - USB (Unifying receiver)Number of keys - 3Resolution - 1000DPITransmission method - wirelessSize (mm) - 107*59*26.5Package include - 1*Mouse System RequirementWindows Mac Chrome OS Linux Compatible with SurfaceBluetoothRequirements - Bluetooth low energy technologyWindows 10 or higher; Windows 8Mac OS 10.10 or higherChrome OSAndroid 5.0 or higherOr receiverRequirements - Available USB portWindows 10 or higher; Windows 7; Windows 8Mac OS 10.10 or higherChrome OSLinux Kernel 2.6Internet connection for software downloadUSB port Easy To Install Just pull out the sticker label; Pebble will automatically turn on the power. After it is connected; the status indicator will flash green and blue. Turn on the Bluetooth connection function on your computer and search for Pebble to easily connect via Bluetooth; select and click to complete the pairing. Or; you can plug the receiver stored in the mouse into your computer and use this USB receiver to connect. It's that simple. After the pairing is complete; you can easily switch between Bluetooth and USB connections. Just press the button under the mouse for 1 second. The blue light means the Bluetooth connection is used; and the green light means the USB receiver connection is used. Press the button for 3 seconds to pair with other devices via Bluetooth. When the blue and green lights start to flash; it means that you have entered the pairing mode.