Garmin Echo Map 70Dv Worldwide with Transducer (Discontinued by Manufacturer) Version offered with preloaded LakeVu HD maps that include over 17,000 detailed lakes, of which more than5,700 HD lakes have 1" contours shoreline to shoreline Garmin DownVu scanning sonar provides a nearly photographic view of fish and structure under the boat Includes all-in-one 77/200kHz HD-ID / DownVu 8-pintransducer featuring a built-in fast-response water temperature sensor, along with transom and trolling motor mounts Includes: echo MAP 70dv with Worldwide base map, 8-pin all-in-one 77/200kHz HD-ID / DownV transducer with transom and trolling motor mounts, power/data cable, bail mount, flush mount, protective cover, and documentation Supports SideV and DownV with CHIRP scanning sonar technology (requires GCV 10, sold separately). Optional maps can be shared with multiple networked Garmin displays on the boat