Humminbird Transducer XNT 9SI 180-TThis compact dual side imaging. 20 60 86 (2) degree, 200 83 455 kHz with built in temperature has a 20' cable. More secure, especially at high force of waves, with an improved running angle, and an optional lock down screw to override the kick up. Model XNT 9 SI 180 T Transom Mount Side Imaging Down Imaging Transducer Product Code 710200 1 UPC 0082324507502 Mount Type Transom Sonar Type Side Imaging, 2D Current Models HELIX 9, HELIX 7, HELIX 5