__________________ product specification: Cooler Master ® unique sensor up to 10,000dpi provides the highest performance and very fast response. Comfortable grip with unmatched stability and control. R G B lighting has five preset modes and effects to give it a style of aesthetics and style. Ideally balanced weight up to 100 grams, so do not be too light, not heavy ideal for playing games that require the speed of movement. Designed to serve both left and right hands equally and comfortably, as well as all types of grips. 12 month guarantee .