LUCKY Portable Fish Finders Sonar Transducer is designed for amateur and professional fishermen. The kayak fish finder detects water depth, approximate fish location, short & tall weeds, sand & rocks. You can get the reference information on the color LCD display. Adjustable sensitivity(1-5), battery save mode; backlight mode; fish and fish school alarm assistant functions equipped on the portable depth finder. The LCD display of the fish finder for kayaks is visible under sunshine. To turn on the backlight, you can also see the fish information at night. This kayak fish finder can be used for various fishing occasions such as boat fishing, kayak fishing, sea fishing, ice fishing onshore fishing and offshore fishing.