The OM-75 by QPAD uses an Optical sensor from Avago, specifically the ADNS-3060M, providing a DPI/CPI range of 400 or 1600cpi. This results in a tracking speed of 40 inches/sec | 1m/sec, and a maximum acceleration of 15 G. It uses a USB, gold plated connection with a 2m, braided cable.
For most gamers, it's all about the feel, and this is where the QPAD OM-75 truly shines! QPAD OM-75 features the award winning 5-finger grip, a stylish white piano finish that is easy to keep clean and true CPI setting in the sensor (Not software/firmware interpolation). The reliable sensor technology, proven by millions of gamers, has undergone improvements for generations. QPAD OM-75 also features a micro control unit to optimize the tracking performance, pre-mounted Glidz on the feets for smoother and faster mouse movement, 7 buttons of which 5 are programmable for short cuts, keys and macro commands. You can move at a max speed of 1 meter per second without losing data performance.