Mionix Saiph 1800 is a high quality gaming mouse with great precision. The sensitivity is adjustable in-game from 400 to 1800 dpi for games that requires different types of sensitivity. Saiph is ergonomically designed to fit the natural position of the hand. Five programmable buttons included the macro function (scroll wheel and two side buttons). Features: ? Ergonomic design ? 5 programmable buttons ? 1800 dpi laser sensor ? 4 steps in-game dpi adjustment ? 1.8mm lift distance ? 40 000Hz sampling rate ? 50 inch / sec ? Weight: 142 g ? 20 G acceleration ? 8 kb built-in memory ? Teflon feet ? Plug n Play for fast connect ? Compatible with all kinds of surfaces