The mojo rippler will make ripples and waves throughout your spread, giving motion to otherwise dead decoys.It features a realistic mallard drake body and operates up to 6-8 hours on 4 aa batteries (not included).This decoy is designed to meet the rigors of duck hunting.All moving parts and batteries are contained in an easily removable screw-lock housing.The easiest and most economical motion device you can add to your spread.Type: Mallard DecoySpecies: DuckBattery: AAAudible Or Motion: Motion only