High Accuracy: Temperature difference: -50°C ~ +70°C (-58°F ~ +158°F); This aquarium thermometer is accurate to +/- 1°C, no matter where the probe is placed in the tank, it will display an accurate temperature LCD Display: Equipped with large LCD display, easy to read clearly and accurately Adjustable Unit Temperature: Easy temperature adjustment between Fahrenheit and Celsius display; long press the power key to adjust the display of the unit Two suction cups: equipped with suction cups to fix the cable on the side of the tank