Reliable digital depth fo all boat users. Tracks bottom up to 70 MPH. Includes white and black color face plates and bezels. Easy to Install into existing 2 1/8 inh gauge opening. Wire to ignition for auto power on. Rubber buttons for greater reliability. Backlight for use at night. Shallow and deep depth alarms. Transducer can be transom mounted or glued inside most fiberglass hulls. Reads in feet, meters, and fathoms.