Featuresr ergonomic design high quality skin friendly coating wear resistant dirt resistant confortable touchr plug play no drive comes with a tiny usb nano receiverstored in the mouse just plug it into your pc usb interfacer one battery for 24 month usage energy saving one battery for 24 months battery included variation based on user and computing conditionsr 1200dpi precise positioning accurate smart control 24ghz wireless high speed transmissionr ensures reliable connec