Dell Mouse MS3220, Connectivity Technology: Wired, Interface: USB 2.0, Movement Detection Technology: Laser, Buttons Qty: 5, Movement Resolution: 3200 dpi, Features: Mechanical scroll/tilt wheel, Width: 6.29 cm, Depth: 11.53 cm, Height: 3.89 cm, Weight: 98 g, Colour: Black, 3y warranty