Adjustable DPI: switch between 500, 1000, 1500, 1750, 2000, 2500 and 3500 DPI using the upper button to adjust your accuracy on the fly. ( Note: no programming function for Mac system) Optimized for gaming: AVAGO 3050 gaming sensor provides precision and accurate recognition of fast movements. Adjustable 4 polling rate 125Hz, 250Hz, 500Hz, 1000Hz ensures smooth and high-speed movement, up to 1000Hz makes it faster and more accurate than ordinary mouse. Rgb LED lights: customize the spectrum of 16 million+ colors to produce gaming atmosphere that brings you the visual enjoyment during gaming or working. Ergonomic and comfortable: Ergonomic both left & right handed design offers exceptional comfort for your hand during gaming and working. 20 million keystrokes with smooth feet pads will allow you to use this precious gaming mouse for years. What you get: M30 gaming mouse, user guide, software CD(you can also download software from ABKONCORE official webpage) and friendly customer service.