The XM300 boasts an enthusiastic-grade 6400 DPI optical sensor (Pixart 3988) that gives you the optimal accuracy for competitive gaming. Adjustable in 50 DPI increments further allows you to make seamless transition from your old mouse by fine-tuning to the level that precisely fits your play style. Features: 16.8M Customisable Lighting 20-million-Click Omron Switch, Xtreme Ergonomic Design, On-the-fly DPI Adjustable. Compatible with pc. Laser. Programmable buttons. Scroll wheel. Batteries not included. Manufacturers 2 year guarantee.