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 no delays or dropouts. You get top quality with 18... months of wireless range and battery life depending on usage and environmental conditions. Battery life, high-precision scanning and line-by-line scrolling at an affordable price. Optimal comfort for right- and left-handed users with a curved shape that follows the natural curve of larger hands. Special concave keys guide your fingers into the ideal position and the added palm support ensures comfort all day long.