The Garmin Fishfinder 240 is a vintage fish finder head unit designed for outdoor fishing activities. Made of plastic and powered by an electric corded source, this 5-inch unit can detect fish up to a maximum depth of 900ft. It is ideal for fishermen looking for a reliable and durable fish finder to enhance their fishing experience. With a straightforward design and practical features, the Garmin Fishfinder 240 is a trusted companion for any fishing excursion. This unit worked before it was removed from the boat.