DESC: Reliable digital depth for all boat users, this unit tracks the bottom up to speeds of 70 MPH. It includes white and black color face plates and bezels to match existing dash gauges. Easy to install into existing 2-1/8 inch gauge opening with wires to ignition switch for auto power-on. Unit features rubber buttons for greater reliability and is backlight for use at night. It also features shallow and deep depth alarms. The tranducer can be transom-mounted or glued inside most fiberglass hulls. It reads in feet, meters and fathoms. Specifications: Depth capability: 600 ft Display type: Liquid Crystal Display LCD Operating frequency: 200kHz Sonar coverage: 20 @ -10db Power requirements: 10-16 VDC Size: 2.42"D x 4.75'. Models: HDR 610 Transducer, HDR 610 Puck Ducer. Misc Marine Electronics