MOJO and Duck Commander, two names synonymous with successful duck hunting, have combined forces to bring you one of the main ingredients leading to success. The MOJO Rippler will make ripples and waves throughout your spread giving MOTION to otherwise inanimate decoys. Designed to meet the rigors of this type of hunting. All moving parts plus batteries are contained in an easily removable housing of a screw lock design. Operates on 4AA batteries (not included).