Humminbirds XM 9 MDI MEGA Transom Transducer gives the compatible sonar unit impressive, and improved detail of structure and cover. Wide-angle CHIRP enhances fish arches when in the 2-D sonar setting. Improve your identification of cover, structure and targets with Dual Spectrum sonar.Built-in temperature sensor. 20-ft. cable. All hardware is included. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Transom Transducer.