SteelSeries Heroes of the Storm Gaming Mouse (Certified Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty 8 programmable buttons that can also be used for macros Ambidextrous shape, and ergonomic button layout for use with both hands Three different zones of lighting with 4 levels of intensity and pulsation Acceleration up to 30g, 1ms configurable response time, 11,750 frames per second