Dimensions: 240 x 290 x 2 mm / 9.4" x 11.4" x 0.08" Surface: HD surface offers superior tracking Specifications: Material: Hard plastic Size: Small Glide: Rough Compatibility: Optical, laser, ball Features: SteelSeries 4HD is a hard plastic composition specifically engineered for professional gamers who demand extremely consistent precision, accuracy and stability. The finely textured surface consists of tens of thousands of light reflecting microscopic points, optimized to enhance the tracking capabilities of next-generation gaming mice. Parts: 1 year limited