The days of clicking the mouse wheel are over thanks to the 3Dconnexion CadMouse's dedicated middle mouse button. It's simply more comfortable and convenient to press than the scroll wheel. The device is housed in a stylish matte ergonomic design that supports your hand in a comfortable and natural position, hour after hour. With the 3Dconnexion CadMouse, you're in complete control thanks to its advanced laser sensor. With 8200 dpi and a poll rate up to 1000Hz you'll click exactly where you need to, when you need to. It's the level of precision CAD professionals demand - and deserve.