Higdon Decoys Swimmer Mallard 

Higdon Decoys Swimmer Mallard
Easily add motion to your entire spread
Rotating schedule of movement/stillness
Adjustable pressure for optimal control
Make your spread come alive with realistic ripples and splashing. This foam-filled decoy swims for five seconds, then sits idle for 10 seconds on a continuous cycle. An adjustable nozzle controls water pressure for the perfect decoy-rippling effect. There's no need to tie on a weight -- the waterproof battery/timer box and 10-ft. power cord act as anchor and decoy line. Includes rechargeable 12-volt battery and charger.
Available: Swimmer Mallard Drake.