Humminbird HDR 650 In-Dash Digital Depth Sounder

Know exactly how deep the water below your boat is, and help in the avoidance of underwater perils, with the HDR 650 In-Dash Digital Depth Sounder from Humminbird. The single beam sonar uses an included transom mount transducer featuring 20° of coverage at 200 kHz to accurately read depths to 600'. Beyond reading depth, you can also have the HDR 650 alert you to predetermined depths via its programmable alarms feature.