Enjoy all-day comfort with the CHERRY MW 9100 Wireless mouse and its rubberised sides, compact design and flexible connection options via Bluetooth or 2.4 GHz wireless. Other highlights: - AES-128 encryption - Many weeks of use on just one battery charge - Status LEDs show battery life, charging status and resolution - Selectable speeds (1000, 1600, 2400 dpi) System requirements: - Bluetooth connection: Compatible device with at least Bluetooth 4.0 USB connection: Available USB port, Windows 7, 8, 10, 11