Orders placed after 4PM on weekdays will not ship until the next business day. Orders placed after 11AM Fridays will not ship until the following Monday.
Faster shipping methods may be available; just upgrade during checkout.
*Some exclusions apply.
Enjoy Extended Returns thru Feb 1, 2017!
You have until Feb 1, 2017 to return or exchange items purchased between Nov 1, 2016 and Jan 1, 2017. All other standard return policy conditions apply.
Enter new zip code to refresh estimated delivery time.
Help make your next ice fishing adventure more successful with the ICE 688ci Combination GPS/Sonar Fishfinder from Humminbird. Get all the information you need to find fish using this fishfinder's internal GPS antenna, built-in cartography, and advanced sonar. A 5" color screen with LED backlight allows you to display mapping or depth information. In addition to the display unit, this fishfinder comes complete with a tilt and swivel mount, an ice transducer and float, battery and charger, and a carrying bracket and bag to haul it all out on the hard water.
This combo features a peak to peak power output of 4000W so you can read bottom in up to 1500'. The transducer utilizes two coverage angles of 20° & 60° at -10db, so you can adjust coverage from narrow to wide, based on angling conditions. SwitchFire technology allows you to choose between clear and max modes, so you can select the level of sonar returns displayed. Dynamic zoom provides 2 times magnification on the view of a depth range of your choosing so you can key in on certain areas. Ice target line allows you to select the exact depth of any point on the flasher readout so you can know exactly where the fish are.
Mark your most productive holes and easily return to them using the unit's internal GPS antenna and chart plotting capabilities. The built-in Unimap cartography covers the contiguous US coastline, as well as inland lakes and rivers on maps with 30-meters per-pixel resolution. This unit features a 32GB SD card slot, which allows you to save screenshots, sonar recordings, and waypoints for future reference.
LED backlit display provides bright, clear color images for easy viewing in harsh sunlight
5" diagonal display with LED backlight
Selective fish ID shows fish as easy to read icons
Freeze frame pauses live soundings for further study
Screen Snapshot lets you take screenshots of the display
Wide / narrow split screen allows you to see the returns from both sonar coverage cones
Split screen zoom allows you to key in on one section of the water column in one view, and the whole depth in the other
Sonar recording allows you to replay your readings from the day
Bottom lock fits the entire water column on the screen no matter the depth
Custom view selections allows you to focus on a certain section of the water column
Can be configured to show flasher readings or charts
DualBeam PLUS combines 2 sonar beams for great detail and a wide coverage area
SwitchFire Sonar allows you to choose between clear or max mode to filter out noise or show more detail
Clear mode uses algorithms to reject interference
Max mode turns the sensitivity up to display all signal returns for more detail
Target line shows exact depth of any point on flasher
Dynamic zoom magnifies your view of a specific depth range
Target separation of 2.5"
GPS antenna built into the head unit
Saves up to 2500 waypoints
Saves up to 50 routes
Saves up to 20000 points on a total of 50 tracks
Humminbird Unimap included
Optional Navionics or Lakemaster charts
Carrying bracket stores battery, display, and transducer assembly