The MX518 2005 by Logitech uses an Optical sensor, providing a DPI/CPI range of 400, 800, 1600dpi, up to 1800 dpi. and a maximum acceleration of 15 g. It uses a USB connection. It weighs in at 106 g grams with the cable and is approximately 130 x 70 x 36 mm (LxWxH).