Humminbird Fishfinder 587ci HD DI Color Down Imaging GPS Combo: * The Humminbird Fishfinder 587ci HD Color Down Imaging GPS Combo features precision GPS technology and built in UniMAP * GPS chartplotting and trackplotting * The Humminbird 587ci HD DI Combo stores 2,500 waypoints, 50 routes, 50 tracks/20,000 points * Down Imaging sonar provides photo-like views of the bottom * DualBeam Plus allows you to target both structure and fish * Quick disconnect mounting system * Down imaging sonar returns a photo like image below the boat * The Humminbird 587ci HD DI Combo features a backlite for night time use * Waterproof construction * Temperature sensor * 2-1/2" target separation * 4.5" 640V x 480H 256 color TFT display * Internal GPS receiver * Single, full-size SD card slot * Down Imaging 455/800 kHz, 75-degree/45-degree beam with 350" depth capability * DualBeam Plus 200/455 kHz, 28-degree/16-degree beam and 600" depth capability * 2400W peak-to-peak power * 2-year limited warranty * Humminbird GPS Fishfinder Combo Model# 408480-1