The front and rear sections screw apart to allow replacement of a small photo-cell battery, which is said to last for about 14 hours of continuous use. The lure's action is water-activated. It doesn't run when dry, and there is no switch. It comes from a company called Diversified Technology in Lynnbrook, New York. There is as yet no active website, nor do I have any pricing information, but the lure will apparently be on the market sometime later this year.