Fish Finder & Depth Finder: This is a portable fish finder that can display the position and water depth of approaching fish. A sonar transducer can be attached to the hull of the kayak or boat to sense changes in water depth as it moves. The water depth detection range is between 3 feet (1 meter) and 328 feet (100 meters) when the sensor is fully submerged in water. Useful data display: In addition to fish depth and water depth, the handheld fish finder also displays short and tall grass, sand and rocks on the bottom. At the same time, the depth measurement unit can be freely switched between feet or meters. By turning on the backlight, the display can also be seen in sunlight or in the dark. Handheld and Portable: The kayak fish finder is only sized to be held in one hand. The package includes a neck strap that you can wear around your neck when you are busy on the kayak or boat. Meanwhile, the 5-level sensitivity adjustment makes it possible to fish in clear water or muddy water. Package: Detector 1