Trolling Motor Mount; 83/ 200 kHz Beam Frequency, 455 kHz Operating Frequency; 20/ 60/ 180 Degree Down Beam Angle; 15 Feet Cable; With Built In Temperature Sensor/ Hose Clamp/ 15 Feet Cable; Compatible With HELIX 5 SI GPS, HELIX 5 CHIRP SI GPS G2, HELIX 7 SI GPS, HELIX 7 CHIRP SI GPS G2, HELIX 7 CHIRP SI GPS G2N, HELIX 9 SI GPS, 899CI HD SI 798ci HD SI, 798ci SI, 698ci HD SI,598ci HD SI, 398C SI To The Maximum Capability Of The Unit. HELIX 12 CHIRP SI GPS, HELIX 10/9 SI GPS, HELIX 7 CHIRP MEGA SI GPS G3/G4, 1199ci HD SI, 1198c SI, 1197c SI, 999ci HD SI, 998c SI, 998c HD SI, 899ci HD SI, 898ci HD SI, 898c SI To The Maximum Capabilities Of The Transducer