Feature: 3D 3Keys 2. 4GHz wireless Mouse 800 DPI Button Life: 1 million cycles Freely 360-degree use, Max Control Distance: 15M Radio frequency: 2. 4GHz Designed for USB applications Mouse battery: 2 AAA alkaline batteries Telescopic wire: 80CM/100CM/120CM selectable (Charge and Play) Dimensions: 85mm(L) x 50mm(W) x 30mm(H)