XM 9 MDI T MEGA Down Imaging Transom Mount TransducerTransom-mounted Digital CHIRP Dual Spectrum 2D CHIRP with 25 and 42 coverage @ -10dB, 455/800/MEGA MEGA DI CHIRP with 45 and 75 @ -10dB Down Imaging transducer accessory. Features:. Transom-mounted transducer. Only compatible with MEGA DI HELIX models. 1-Year Limited Warranty. 20 foot cable length. WARNING: This product can expose you to chemicals including LEAD which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.