RAPOO M100 2.4GHz Bluetooth 3 / 4 Quiet Click Wireless Mouse Blue - 1300dpi Connects up to 3 Devices, Up to 9 months Battery Life - Silent switches reduce click noise – good for night work when your family are asleep - Simultaneously connected up to three devices by Bluetooth 3.0, 4.0 and 2.4G wireless - Smart switch among devices - 1300DPI tracking engine - 2y replacement warranty