Get instant, reliable digital depth readings aboard your boat with the Humminbird HDR 650 In-Dash Digital Depth Gauge, which features an LCD display with backlighting for ease of reading and a 1.25" customizable bezel and faceplate. The depth-sounder provides 20° single-beam coverage at 10 dB with 200 kHz frequency for 2-D fishfinding. 700' depth capacity. Waterproof. Includes a transom-mount transducer.