Humminbird XNT 9 SI 180 TNew transom mount transducer design. Compact dual/side imaging. 20/74/84 degree, 200/83/455 kHz with built in temperature. New design is more secure and is not a prone to kick up at high force of waves. It has an improved running angle and a optional lock down screw to override the kick up. Has same hole pattern as some older version transducersFor Use With: 797cWARNING: 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. Specifications: Cable Length (Feet): 20&'; Mounting Style: Transom Pins: 7 Speed Included: No Temperature: Yes Imagining: Standard/Down/Side Chirp: No Box Dimensions: 2"H x 8"W x 9"L WT: 1.6 lbs UPC: 082324507502 Quick Guide (pdf)Owner&';s Manual (pdf)