Includes dual-beam transducer with Garmin Chirp traditional sonar for crystal-clear images and remarkable target separation.Control Method:Touch.Special Feature:Bluetooth. Built-in Garmin quickdraw contours mapping software lets you create and store maps with 1’ contours for up to 2 million acres Built-in GPS lets you mark waypoints, create routes and view boat’s speed Bright, Sunlight-readable 4.3” display and intuitive user interface Rugged design for every fishing environment. Frequencies supported: Traditional: 50/77/83/200 kHz, Transmit power: 200 W (RMS)