Fish Finder and Depth Finder : It is a portable fish finder that could display approximate fish location and water depth. The sonar transducer can be attached to the hull of kayak or boat in order to understand the changing of water depth when you are moving by. The water depth detection range is between 3ft(1m) and 328ft (100m) when the transducer is completely immersed in the water. Helpful Data Display : Besides fish depth and water depth, the handheld fish finder will also display short & tall weeds, sand & rocks on the bottom. Meanwhile, the measurement unit of the depth can be freely switched by feet or meter. The display is also visible in sunshine or darkness by turning on the back light. Handheld & Portable : The size of kayak fishfinder is designed for just one hand held. You will find a neck strap in the package which allows you to wear it around neck when you are busy on the kayak or boat. Meanwhile, 5 levels sensitivity adjustment makes fishing possible both in clear water or turbid. Ideal for Fishing & Fishing Gift : It is easy to use LUCKY depth finder in boat fishing, ice fishing, shore fishing no matter in freshwater or in saltwater. If you are looking for a gift for your husband, father, friends or any anglers, then look no further, the LUCKY fish finder is now better than ever. Portable Fish Finder FFC1108-1 is designed for fishing beginners. However, it is accurate enough for all levels of fishing lovers. This portable fish finder is an ideal fishing gear for ice fishing, kayak fishing, shore fishing and canoe fishing. It detects and displays water depth, approximate fish location, fish alarm, weeds and rocks on seabed. If you are choosing a fishing gadget to learn the depth of water and track fish location, it is the best value for the money. It is one of the best fishing gifts for men on Birthday, Father's Day, Christmas, New Year, Valentine's Day, Thanksgiving or Anniversary. Take it for camping, hiking, holiday or survival in the wild is also a good companion. Fishing in an easier way! Get to know the water depth and fish location is the key factor that allows you to fish in an easy way. But how does the portable fishfinder works? The sonar transducer works in a 45 degree beam angle when immersed into the water which can detects up to 328FT water depth below the sonar sensor. When fish and fish schools moving in the detecting area, the fish location will be displayed on the handheld fish finder. Calculate the accurate fish location by the right column on the screen. Fish Alarm： The sonar sensor reflects the signal to the fish finder handheld when it detects fish and fish schools. Then the device alerts you and no worry about missing big fish any more. Battery Saving Mode： The fishing depth finder is powered by 4xAAA batteries, and you finally get rid of troubles of USB charging all the time. Turning on the battery saving mode, the fish finder handheld can be working continuously for more than 5 hours. Back Light Mode： LCD display allows data readout even in the sunshine. Meanwhile, when fishing at night, blue back light mode allows data readout in darkness. 5 Levels Sensitivity： Sensitivity adjustment function helps getting accurate depth data no matter fishing in clear water or turbid. It also helps fishing transducer distinguish small fish and big fish by setting different sensitivity levels. 2inch TN/ANTI-UV LCD Display, Blue LED Back lighting. Depth Measurement Unit: FT/M. 1.81inch diameter transducer sensor. Detect Depth Range: 3ft~328.08ft (0.6m~100m) under sensor. Sensor coverage range: 45 degrees beam angle in 200Khz. Sensor Operating Temperature: 14°F to 122°F(-10°C-50°C) Transducer Cable Length: 25ft (7.62m) Powered by: 4 x AAA batteries (not included)