... year warranty working on more surface 2.4G wireless mouse Package Contents:Mouse, Nano-receiver , Battery, User documentaion,Warranty& ... to remove it the receiver stores inside the mouse.2.You get a powerful ,reliavle connection,with ... delays or dropouts,even in the busiestwireless environments.3.An on/off switch helps conserve power.and ... to work and game are handly. mouse wireless mouse E154 gray