CARACTERISTICAS Display Options: Auto ranging, 2X and 4X auto and manual zoom, 3 Fish Symbol™ sizes, adjustment bar, and large or normal digits Alarms: Deep water alarm, shallow water alarm, 3 sizes of fish alarms, battery low alarm Transducer Auto-Sense: Automatically displays speed and temperature data without menus See-Thru™ Technology: Shows weak and strong returns simultaneously Depth Control Gain (DCG™): Automatically adjusts fishfinder sensitivity according to depth Sonar Power Output: 400 watts (RMS); 3200 watts (peak to peak) Frequency: 200 KHz Depth: 900 foot max depth* Case: Fully gasketed, high-impact plastic alloy Display: 240 x 240 pixel, FSTN, 4.2" diagonal (10.7cm), 3" x 3" (8.3cm x 8.3cm), high-contrast LCD with backlighting Keys: Backlit Size: 4.625"H x 6.0"W x 2.75"D (11.7cm x 15.2cm x 7cm) Weight: 1 lb. 6 oz. Temp. Range: 5°F to 158°F (-15°C to 70°C) Waterproof: Submerged to 1 meter for 30 minutes Input: 10 to 15 volts DC with high-voltage protection Usage: 10 watts maximum Nominal: 12 volts DC at 0.8 amps Specifications are subject to change without notice. * Depth capacity is dependent on water salinity, bottom type, and other water conditions.