USB wired optical mouse NGS Mist 1000 DPI with 2 buttons and a scroll wheel that also doubles as a 3rd button. Ergonomic black curved design makes this mouse comfortable to use and offers you a great accuracy to work with. Suitable for both left and right handed. The NGS Mist is Plug and Play, you simply plug it in and it is ready to use immediately. Covered by 2 years manufacturer warranty.