The Microsoft Arc Wireless Keyboard offers compact & highly functional keyboard features that will prove to be a useful computer companion. Effortless design An elegantly designed black wireless keyboard that can travel with you, the lightweight Arc Wireless Keyboard can be easily turned off & on to save battery power. Its 2.4 G Hz wireless connection ensures lag-free operation even when playing intense games & its comfortable design reduces fatigue. Add style & function to your computing with the Microsoft Arc Wireless Keyboard.