This is a laser engine. Compared with traditional photoelectric engines, it has better performance, more accurate positioning, and no frame loss on 4K 8K screens. Ergonomic vertical design. Ergonomic vertical design. Unlike traditional wrist and arm strains that over time cause excruciating pain. The vertical design provides better support for your forearm, minimizing wrist pain caused by twisting. Pixart PMW3325 infrared sensor and 5 level adjustable DPI level 1500-2500-4000-7000-10000 DPI. Color-changing RGB marquee strips on both sides. Programmable and customizable. 11 programmable buttons and onboard memory. Widely compatible with Windows XP (x64)/Vista/7/8/10/Linux. feature: Five levels of DPI variable speed. Five adjustable DPI levels, respectively 1500-2500-4000-7000-10000DPI, from low to high. Configure four DPI indicator lights, the first light is on 1st, the second light is on the second, the fourth light is on the fifth (10000DPI). One light on means level one, two lights on means level two, four lights all on means level five (10000DPI). The optoelectronic chip adopts PAW3325. Color-changing RGB marquee strips on both sides. IBM or compatible computer One available USB port, supports Windows 2000/ME/XP(x64)/Vista/7/8, Mac OS X(over V10.4)