Our popular "Mushroom" GPS receiver with an advantage! Our Digital speed display hooks in line to give you an accurate ground speed. Because the receiver isn't attached to your engine, it's accurate even under less-than-ideal conditions, such as slippage or even on the water. Popular for speed boats, ATV's, antique tractors, or even as an addition to a planter monitor. The GPS receiver and digital display come standard with the 4-pin round AMP plug, but there are a variety of adapters available, including an adapter for Raven, Micro-Trak, John Deere, DB9 port, and even a cigarette lighter. This unit does include a male cigarette power cable(Part#AA04RSR-CLP).