The Powerfully simple 5-inch echo 201dv includes an all-in-one transducer that delivers both advanced HD-ID 77/200 kHz and Garmin DownVu scanned images simultaneously on a horizontally or vertically split screen. See excellent target separation and a nearly photographic view of fish with 2,400 W peak-to-peak Power, and experience narrow-to-wide viewing cone angles that provide a clear picture down, under the boat, to 1,750 feet maximum . Plus, sonar history rewind and Smooth Scaling depth-range adjustments allow for seamless transitions from shallow to deep water and back. Includes quick-release tilt/swivel mount plus transom and low-profile trolling motor transducer mounts to make installation a snap.