Features: 1) Operation distance: 1.5m 2) Easy scrolling with wheel 3) Power: 2 x AA batteries 4) Radio frequency: 27MHz 5) Search Internet relax 6) Doesn't require cleaning Inner packing:1pc/box Box dimensions: 23.5 x 5 x 18cm Outer packing:40pcs/ctn Carton dimensions: 53.5 x 38 x 49cm