GARMIN R109LM Plastic 49 ft Cable Depth/Temperature Through-Hull Mount Transducer, 38 to 75 kHz and 80 To 130 kHz | 010-12809-20

Designed for coastal fishing with an operating frequency range of 38-75 kHz (low frequency) and 80-130 kHz (medium frequency). This CHIRP transducer enables bottom detection down to 10,000’ and resolution so precise it’s possible to distinguish between individual baitfish, game fish and underwater structures. Designed for boat 40’ and above with fiberglass, wood or metal hulls.