Humminbird Digital Depth Gauges give you instant, reliable depth readings even at speeds of up to 113 kph, and can alert you to both deep and shallow water. Installation in any existing 5.4 cm opening is easy, and they wire to the ignition to automatically turn on. We didn’t stop there; the display reads in feet, meters or fathoms, and you can pick a colour to complement your boat’s gauges. Comes included with a Transom Mount Transducer which can be glued in-hull of solid fibreglass boats.