The Humminbird XI 9 20 Ice Transducer gives ice anglers a versatile 2D sonar view for watching jig movement, locating fish, and reading bottom changes beneath the hole. Its single/dual beam setup uses 20- and 60-degree cone angles at 200/83 kHz, with the narrower beam focusing coverage beneath the transducer and the wider beam covering more water. An 8-foot cable provides useful reach around portable ice fishing electronics and shelters, making this ice transducer a practical choice for targeting walleye, perch, crappie, trout, and other hardwater species across changing depths. 2D single/dual beam sonar 20Adeg and 60Adeg beam angles 200/83 kHz frequencies 8 ft cable for portable ice setups Compatible with: Gen-1 ICE HELIX Non-CHIRP Models All non-CHIRP HELIX units, except for DI models and they must be in Ice Fishing mode All 100 and 300 Series, except for DI models All 500, 600, 700, 800, 900, 1100 series, except for DI and 3D models Manufacturer's one-year limited warranty