Stefan Mileschin

Gigabyte Technology is currently preparing to release an updated version of the M7580 wireless mouse. Dubbed simply M7580 V2, the new arrival swaps the 1000 DPI-capable optical sensor of its predecessor for one that will allow a sensitivity of up to 1600 DPI. Other than the sensor, things remain pretty much the same as the first version - an ambidextrous design, 2.4 GHz wireless connectivity, two buttons and a scroll wheel, a low-power indicator, a battery life of up to five months (two AAA batteries are used), and a bundled nano received (USB).

http://www.techpowerup.com/195225/gi...ess-mouse.html