... range:20m 1 year warranty working on more surface 2.4G wireless mouse Package Contents:Mouse, Nano-receiver , Battery, User documentaion,Warranty&quality ... youdo need to remove it the receiver stores inside the mouse.2.You get a powerful ,reliavle connection,with virtually no delays ... conserve power.and a smart sleep model extends battery life.4.Between the 800/1200 DPI free conversion,you can adjust ...