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: MOTION in your spread by use of the easiest and most useful of decoys, a vibrating rippler. The MOJO Rippler will make ripples and waves thru out your spread giving motion to otherwise dead decoys. Duck hunters must have dependability and reliability and this decoy is 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. The easiest and most economical motion device you can add to your spread. Operates on 4AA batteries (not included). Features: Duck Commander approved Realistic Mallard Drake Body Operates on 4 AA batteries (not included) Specially designed motion to create ripples like live ducks Easy batter installation through removable screw-lock housing