Chesapeake Black 2 Depth Sounder with Thru-Hull Transducer Perimeter-lighted black dial with stylish blue and white graphics, polished stainless steel bezel, and domed glass lens.The Depth Sounders from Faria offer a 3-199 foot 1-61meters depth capability, with an automatic gain control, backlighting for maximum night vision, keel offset, and deep and shallow water alarms. Depth can be read in meters, and feet. With its oversized back-lit display depth can be easily read in any condition. Audibl