The Garmin echoMAP UHD2 75sv with both ClearVu and SideVu scanning gives you nearly photographic images of what’s below and to the sides of your vessel all within its amazing 7 inch 800 by 480 pixel WVGA full colour screen. You can clearly see submerged objects, structure and fish. Operating on the traditional 50/77/200 kHz and the mid/high 260/455/800 kHz ClearVu and SideVu frequencies you will have a usable depth reading down to approximately 300m in salt water. CHIRP sonar provides amazingly clear target separation and definition because it puts even more energy onto the target than traditional sonar. Sonar features include multiple alarms, bottom lock, water temperature log and sonar history rewind. Using the inbuilt GPS antenna or the optional external one you can save up to 5000 waypoints, 100 routes and 50 saved tracks. An inbuilt micro SD card slot lets you save and share all your information.