The Humminbird HDR 650 Digital Depth Gauge has a customizable bezel and face color to complement your installed gauges. It is completely waterproof and comes with a transom mount transducer for easy installation. The large backlit display makes the Humminbird HDR 650 marine depth gauge easy to read even in darkness. Further, the fishing depth finder displays depth in a reliable and accurate digital format to reduce the margin of error. Also, the digital depth finder sports a simple interface that lets you set alarms that indicate shallowness or extreme depth. The Humminbird HDR 650 Digital Depth Gauge works like a charm for speeds up to 70 mph and it makes a smart aid for seafarers and fishing enthusiasts.