The Higdon Pulsator Duck Decoy creates a simulated feeding frenzy! Simply turn on the unit and drop it in the water. The cord and battery compartment acts as a cord and weight, no need to attach a separate weight. Unit has a built in timer that surges a spray of water every 1.5 seconds which perfectly simulates feeding ducks. Add multiple units to your spread and watch your decoys come to life. Eliminates strings and no more running wires running back to your blind. Battery runtime: 6-8 hours. 
Higdon Pulsator Action Video
Includes decoy, battery housing, 12V rechargeable battery, charger, and 6 'cord.
Note: Attach safety cord to each side of plug. This will keep decoy and battery connected. Warranty does not cover sunken un-recovered battery and box.