Mouse Asus UX300 PRO, Optical, 1000-3200 dpi, 6 buttons, Ergonomic, Black. Advanced tracking technology ensures superior accuracy and responsiveness on every surfaceErgonomically-molded and shaped for excellent grip and comfort even during long sessionsInstant resolution switching from 1000 to 3200 DPIhttps://www.asus.com/Keyboards-Mice/UX300-PRO/