RAPOO 3510PLUS 2.4G wireless fabric optical mouse Grey (LS) Reliable 2.4G wireless connection Reliable 2.4G wireless connection up to 10 meters. 12-month battery life With Rapoo's energy saving technology and power switch, you can use your mouse without power interruption for up to 12 months. 1000 DPI tracking engine You will enjoy responsive and smooth cursor control with the 1000 DPI invisible tracking engine.