Non-slip rubber on the sidesNano USB receiver can remain inserted in the laptop permanently, or can be stored in the mouseInfrared sensor: particularly precise and energy-savingErgonomic design, optimized for right-hand operationTrouble-free 2.4 GHz wireless technology with a range of up to 5 metersSwitchable resolution (fast/slow) with button on the topOn/off button, for additional energy savingPlug and Play: easy set-up without the installation of software