WASTING HOURS LOOKING FOR THE BEST FISHING SPOT? THIS PORTABLE FISH FINDER IS WHAT YOU NEED.WHAT GIVES THAT 'LUCKY' 10 PERCENT OF FISHERMEN AN EDGE OVER EVERYONE ELSE? THIS PORTABLE FISH FINDERIf you can predict where fish might be, your chances of catching them dramatically improve.FISHES AND BOTTOM CONTOUR READOUT.This portable fish finder detects and displays water depth, approximate fish location, short & tall weeds, sand & rocks on the bottom. Portable Fish Finder design gives you another option to hang it around the neck.The boat depth finder suits for variety fishes fishing environments.It can be used for offshore fishing, kayak fishing, ice fishing, lake fishing, sea fishing and so on. You can also use it on the moving kayak with speed below 5mph.HOW IT WORKS Toss the sensor and float into the water. Attach the Side-Scan Adapter to the boat hull using the mounting tabs. Attach the sensor to a handle, lower the sensor into the water.DEPTH READOUTThe portable fish finder detector range is in a 45cone underwater. The detection of the depth range is from 3ft(1m) to 328ft (100m) below the sonar sensor. The water depth can be shown either in feet or meter. The transducer is with 25 ft cable and removable transducer float.A SMALL PORTABLE FISH FINDER WITH POWERFUL FUNCTIONS.5 modes sensitivity options; battery save mode; backlight mode; fish and fish school alarm.Normally fishing depth finder supports 4-5 hours continuously working with brand new batteries. Open battery save mode can be working even longer.FEATURES: Measure Units: Meters / Feet Display: TN/Anti-UV LCD display Backlighting: LED 4.6cm diameter Round transducer sensor Depth Range : Max: 100m (328ft) ; Min: 0.9m (3ft) Sensor Beam Angle: 45 degrees Operating Temperature is from -20C to 70C (-4F to 158F) Uses 4 x AAA batteries (not included) Auto turns off within 8 or 16 seconds when there is no signal.