Humminbird Ice Fishing TransducersXI 9 19 Ice Transducer Compatible with: ICE 35, ICE 45, ICE 55 Cable Length: 8 Feet 1 Year Limited Warranty XI 9 20 Ice Transducer Compatible with: Gen 1 ICE HELIX Models (Non CHIRP) Compatible with: All non CHIRP HELIX units, except DI models (must be in Ice Fishing mode) Compatible with: All 100 and 300 Series, except DI Compatible with: All 500, 600, 700, 800, 900, 1100 Series (except DI and 3D models) Cable Length: 8 Feet 1 Year Limited Warranty