Features Sensitivity: The sensitivity can be freely adjusted according to the water depth. Detects and displays water depth, approximate fish location, fish size, short tall weeds, sand and rocks on the seabed. Settings can be saved when closing. Round transducer with cable and removable transducer float. Can be used for off-pier, boat and ice fishing. Multiple function settings: 5 user-selectable sensitivities; power saving mode; backlight mode; fish alarm; unit of measure. Water depth is displayed in meters/feet. Suitable for fishing environments such as lakes, rivers, seas, etc., with depths ranging from 1M to 100m. Features: -Sensitivity: The sensitivity can be freely adjusted according to the water depth. -Detects and displays water depth, approximate fish location, fish size, short tall weeds, sand and rocks on the seabed. Settings can be saved when closing. -Round transducer with cable and removable transducer float. Can be used for off-pier, boat and ice fishing. -Multiple function settings: 5 user-selectable sensitivities; power saving mode; backlight mode; fish alarm; unit of measure. Water depth is displayed in meters/feet. -Suitable for fishing environments such as lakes, rivers, seas, etc., with depths ranging from 1M to 100m. Specifications: Condition:100% Brand New Color: As shown in the picture Measure Units: Meters / Feet 4.6cm diameter Round transducer sensor Depth Range : maximum: 100m (328ft) ; Minimum: 0.9m (3ft) Sensor Beam Angle: 45 degrees Display the nature or circumstance of bottom of Sea (i.e. grass, rock and sand) Operating Temperature is from -10°C to 45°C (14°F to 113°F) Battery: Uses 4*AAA batteries (Not included) Package List: 1*Fish Finder 1*Instruction Manual 1*Lanyard 1*Fixing Screw 1*Fixing Frame 1*Sensor Package List