This amazing product is especially designed for amateur and professional fishermen alike, to find out the location of fish, depth and bottom contour of water. The unit can be used in ocean, river or lake and is fantastic for detecting schools of fish in any particular area. Features: Wide and clear LCD display. Depth readout from 0.6 to 100m. Fish alarm. Battery save mode. Selectable sensitivity. Fish depth scale. Water temperature indicator. Water-resistant design. Specifications: Display type: TN/ANTI-UV LCD Display size: 4.3 * 4cm / 1.7 * 1.6in Backlighting: White LED Power supply: 4-AAA alkaline batteries (Not included) Measure unit: feet / meter, F / ? Sensor beam angle: 45 degrees Depth range max: 100M / 328Ft Depth range min: 0.6M / 2Ft Operational temperature: (-10-70?) Main body size: 12 * 7 * 2.5cm / 4.7 * 2.8 * 1.0in Main body weight: 119g / 4.2oz Total weight: 450g / 15.9oz Package size: 27 * 16.5 * 6cm / 10.6 * 6.5 * 2.4in Package weight: 550g / 19.4oz Package List: 1 * Fish Finder 1 * Round Transducer with 25ft Cable 1 * Transducer Adapter 1 * Stainless Bolt 1 * Stainless Wing Nut 1 * Neck Strap 1 * User Manual (English)