The V7 MW400 Wireless Ergonomic 7-Button mouse is built for all day comfort. It features a concave thumb rest area to help keep your forearm upright in a more relaxed and natural position, and has a soft touch surface for a non-slip grip. Designed for maximum productivity, the MW400 has 7 buttons including forward and backward, ideal for web browsing, and adjustable DPI settings for even greater control.