MOJO Butt Up Rippler Duck Decoy -These Ripples were developed as a result of a special request by Jase Robertson of Duck Commander, a world class duck hunter who understands that realistic ripples on the water accurately simulate live ducks, thus greatly increasing the attractiveness of your spread to other ducks. Arguably the most efficient way to add realistic motion to a decoy spread, these two decoys were developed by two of the biggest names in waterfowling, MOJO and Duck Commander, to be simple, effective and user friendly. Based on an accurate carving of a feeding mallard. The Butt-Up and the Mallard give a totally different "look" but with the same, and interchangeable vibrating mechanism. Brings not only life, but realistic life to an otherwise "dead" decoy spread. Operates on 4- AA batteries, not included Interchangeable Vibrating Mechanism Realistic RipplesSimulates Live Ducks Duck Commander ApprovedMPN - HW2459