Brand: Logitech Smooth Optical Tracking Dpi: 1000± Number of Buttons: 3 Scrolling: Line-by-line scrolling Connection Type: 2.4 GHz Wireless Range: 10 m Weight: 70.5 g System Requirements: Windows® 10,11 or later, OS 10.8 or later, rome OS, Linux Kernel 2.6 Color: Blue