Ev USB Wired Ergonomic Vertical Mouse DPI 500/1000/2000/3500 for PC-Small Size Comfortable 75 vertical angle can relax your hand and arm even when use for long time 4 Breathing light according to 4 different DPI, DPI: 500/1000/2000/3500, Report rate:250-500-1000 Light weight with Teflon durable feet for free use 6ft high-strength braided fiber cable, anti-skid scroll wheel Small size for the children or women with small palm, best grip sensor, size: 87*104*75mm