Garmins GT41M Transom-Mount Transducer features traditional, CHIRP DownV/SideV that have been optimized for crystal-clear images in rough waters. 260/455kHz operating frequencies in CHIRP DownV and SideV at 500 watts each for 1,500 total watts. Traditional sonar operates at 600 watts in 50/200kHz. Fast-response temperature sensor built in. Includes 12-pin GT41M transducer, mounting hardware and instruction manual. Cancer and Reproductive Harm- www.P65Warnings.ca.gov.