The wireless mouse is standard size with a comfortable, curved design that follows the natural curve of medium to large hands. Work wirelessly and move freely around the room - at distances up to 10 metres Wireless range and battery life depend on usage and environmental conditions. - virtually without delays or dropouts. You get top quality with 18... months7Wireless range and battery life depend on usage and environmental conditions. Battery life, high- precision scanning and line-by-line scrolling at an affordable price.