Logitech G100s Optical Gaming Mouse Exclusive 2500 DPI Delta Zero Optical Sensor: Built for consistent, high-accuracy targeting and cursor control Ultra-durable: Rugged buttons and low-friction feet, rated to last an amazing 20 million clicks and 250 km Advanced surface materials: Feel the difference with hydrophobic coatings that help you prevent your hand from sticking to the mouse Comfortable ambidextrous shape: Helps reduce hand fatigue during long gaming sessions, no matter what your hand size or grip style Made for PC gaming: Compatible with Windows 8, Windows 7 and Windows Vista