Share your favorite waypoints and routes with other STRIKER and echoMAP™ combos. Smooth Scaling™ graphics provide uninterrupted imagery when switching between depth-range scales. Sonar history rewind allows you to scroll back through sonar images to mark waypoints you originally may have missed. Plus, it has a built-in flasher and displays speed data. Easy-to-use color fishfinder w/built-in, high-sensitivity GPSFind fish, mark and return to hot spots, docks and rampsConvenient keypad operationIncludes CHIRP (77/200 kHz) sonar transducerTransmit power (200 W RMS)/(1,600W peak-to-peak), with transom/trolling motor mount and tilt/swivel mount.Upgrade to high performance CHIRP w/GT8 or GT15 transducer (sold separately)