Fishes and bottom contour readout: LUCKY fish finder portable detects and displays water depth, approximate fish location, short & tall weeds, sand & rocks on bottom. Fish finder portable design gives you another option to hang it around neck. The kayak fish finder suits for variety fishes fishing environments: It can be used for off shore fishing, kayak fishing, ice fishing, lake fishing, sea fishing and so on. You can also use handheld fish finder on the moving kayak with speed below 5mph. Depth readout: The fish finder portable detector range is in a 45°cone underwater. The detection of depth range is from 3ft(1m) to 328ft (100m) below fishing sonar transducer. The water depth can be shown either in feet or meter. The fishing sonar sensor is with 25 ft cable and removable transducer float. Small portable fish finder with powerful functions: 5 modes sensitivity options; battery save mode; backlight mode; fish and fish school alarm. Open battery save mode can be working even longer. Product Description LUCKY 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 suitable for ice fishing, kayak fishing, shore fishing and sea fishing. It is one of the best fishing kayak accessories to your friends or family members. They will be surpised of how many fishes they get by this LUCKY fish finder portable, and this surprise is because of you. Function Well understand the water depth and fish location by the portable fish finder. The fish finder portable gives you alerts when fish and fish schools passing by. 5 modes sensitivity options enable you to use the kayak fish finder in different fishing environments. The kayak fish finder can be used in different ways, such as on ice, fixed to kayak, put it into a hole or float it on water surface. You can understand the composition of the bottom contour. Sands, rocks and weeks will be shown on the LCD display. Specification 2inch TN/ANTI-UV LCD Display. Blue LED Back lighting. 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) . Cable Length: 25ft (7.62m) Powered by: 4 x AAA batteries (not included) For Kayak Fishing Attach the Side-Scan Adapter to the boat hull using the mounting tabs. Break though the hull of a boat. Place the fishing sonar sensor against the hull bottom 1 inch underwater. The moving speed of kayak should be below 5mph. For Ice Fishing You should clear the snow on the ice layer. Make sure the surface is smooth enough. Put the LUCKY fish finder portable directly on ice layer to detect fish distribution in purpose of selecting a place to drill a hole. There should be no air between the sensor and the ice and no air between ice layer and the underwater either. Otherwise, the portable fish finder will not work properly. Cut a hole through the ice and put the fishing sonar sensor directly in the water. Enjoy the fishing gear For Shore Fishing Fixed the removable float on the cable. Cast the fishing sonar transducer into water as far as you can. You can cast the fishing sonar transducer either by your hand or by the fishing rod.