Ergonomically designed for right-handed gamers utilizing 'Air Wing' concept Adjustable DPI (Dots Per Inch) switch 500 / 1200 / 1800 / 2500 Avago high-performance optical navigation gaming sensor 2.4G Wireless transmission technology (30 ft. radius) High FPS rate for extremely precise tracking level Requires 2xAA batteries OMRON Micro Switch provides lifespan of up to 5 million button clicks