Product specifications:

1) Display: 2.4-inch TFT color LCD display

2) Backlight: turn on/off white LED
3) Depth: 147 feet (45 m)

4) Sonar coverage: 90 degree beam angle at 125 kHz
5) Power supply: 3.7V lithium battery
6) Waterproof design: Level 4 (splash-proof)
7) Water depth, water temperature, fish position, and bottom contour can be continuously obtained from the water.
8) User selectable zoom sensitivity, units, depth range, shallow water alert, fish icon, fish alert and chart speed settings.
9) Built-in memory saves sonar settings when the echo sounder is turned off.
10) It is best to charge the device before use.
11) Operating temperature: 14°F to 122°F (-10°C to 50°C)