Humminbird's 360 Imaging© provides a complete around-the-boat, underwater image with the same sharp detail anglers have come to know with Side Imaging® technology. With a single sweep, 360 Imaging has the ability to cover a 300-foot diameter circle (70,685 square feet). Maximum depth is 150 feet. This optional accessory DOES NOT replace your standard Side Imaging transducer, it enhances your product.  You must use standard transducer in order to have a digital depth reading. This product includes the AS GPS HS (GPS Receiver with Heading Sensor, standard 360Imaging transom mount bracket and a 20' Ethernet Cable.