1. LCD Screen: Equipped with a large LCD screen for easy, clear and accurate reading. 2. Adjustable Unit Temperature: Easily adjust the temperature between Fahrenheit and Celsius display; long press the power button to adjust the unit display. 3. No matter whether the probe is placed in any corner of the fish tank, the accurate temperature will be displayed. 4. Suitable Environment for Use: Temperature: 0?~+60?; humidity: 20%~85%. 5. Extra-long Cable: The length of the cable connected to the probe is 1 meter, even the largest fish tank can accurately measure the temperature. Specifications: Name: Aquarium Thermometer Material: plastic Size: about 55*42*16mm/2.17*1.65*0.63inch Temperature measurement range: -50?~+110? (-58?~+230?) Power supply mode: a button battery (LR44, 1.5V). Packing List: Aquarium Thermometer*1