The concept of the spinning wing decoy (SWD) was developed in California in the 1990s and started with a single large blade mounted into a U-frame and turned by a DC motor mounted to one of the vertical legs of the U with the blade attached to the frame by an axle. They were generally referred to as the "Goal Post Decoys" and they created a phenomenon in the duck-hunting world.Since then the evolution of the SWD has been toward a life-like bird decoy with a pair of smaller wings. Many hunters today especially guides who hunt every day have learned the single big blade has advantages over the pair of smaller wings; among them it provides for much more long-range attraction and gives the ducks a new "look". Single Large Blade in Metal U-Frame Maximum Flash for Maximum Attraction Blade Quick Connect for Maximum User Friendliness Latest Technology Electronics Remote Controlled -Continuous-Off-Intermittent Use MOJO Big Blade With or Without Remote Heavy Duty Wiring Harness Single Male Plug-In - No Small Wires Red Emergency Wire - Connects Motor Directly to Battery 8 Ah Li Ion Battery Runs up to 7 hours Bearing Mounted to Terminal End of Blade Axle Bearing Housed in Hinged Compartment for Easy Blade Removal 2-Piece 48" Stake