Garmin Striker Plus 4 + TransducerIncludes dual beam transducer with Garmin CHIRP traditional sonar for crystal clear images and remarkable target separation Built in Garmin Quickdraw Contours mapping software lets you create and store maps with 1 foot contours for up to 2 million acres Built in GPS lets you mark waypoints, create routes and view boats speed Bright, sunlight readable 4. 3 display and intuitive user interface Rugged design for every fishing environment