echo™ 151dv Fishfinder with 4-Pin All-in-One 77/200 kHz HD-ID/DownVü TransducerThe Garmin echo 151dv delivers great performance that's powerfully simple to use. Includes an all-in-one transducer that delivers both Garmin exclusive advanced HD-ID 77/200 kHz and Garmin DownVü scanning sonar for a nearly photographic sonar view of fish and structure under your boat. View DownVü and traditional sonar side-by-side on the crisp 4-inch, 8-level grayscale display. See excellent target separation and bottom tracking with 1,600W peak-to-peak power. Narrow to wide viewing cone angles give you a big picture well beyond the sides of your boat from shallow water down to 1,300 feet maximum. Includes quick-release tilt/swivel mount and transom/trolling motor transducer mounting kit.Features: Excellent target separation and bottom tracking Garmin DownVü scanning sonar for a nearly photographic view of fish and structure under boat Includes advanced HD-ID and DownVü all-in-one transducer Display: 4-inch diagonal / 8-level grayscale Resolution: 256 x 160 Includes quick-release tilt/swivel mount, transom mount and low-profile trolling motor transducer mounting kits Transmit power (RMS)/(Peak-To-Peak): 200W/ 1,600W Includes water surface temperature Frequency: 77/200kHz and DownVü included Supports traditional 50/200kHz transducer, without DownVü, sold separately Maximum depth: 1300 ft. 10V - 20V input