This is a mechanical device that imitates the vibrations from predatory fish attacking schools of bait. This will draw freshwater Striped Bass, Striper, Hybrid Striped Bass and Whitebass or sandbass to you and concentrate fish under your boat. Check out the website thumpemupfishing.com for videos and information or check out my videos on you tube - thumpem up fishing channel.
This model has a variable speed controller and 12V plug. Condition is New.