Features: 1.Large screen transparent light temperature measurement accurate, transparent projection screen display temperature measurement accurate to 0.5. 2.0-70 measuring range, water temperature detection meeting different requirements. 3.Small and exquisite, it does not take up space, adsorption on the tank wall, need not worry about occupying space. 4.Suitable for various fish tank environments, such as large indoor fish tank, sea water tank and aquatic tank. 5.Do not put it in the water, just keep it close to the outside of the tank. Specification: Condition: 100 percent Brand New Item Type: Aquarium Thermometer Material: Plastic Color: As Picture Shown Product Diameter: Approx. 7cm/2.8in Weight: Approx. 45g/1.6oz Measuring-Temperature Accuracy: 0.5 Usage: Aquarium of Various Types Instruction: 1. Do not put it in the water, just keep it close to the outside of the tank. 2. The temperature range is 0-70 3. Long press the switch button for 3 seconds to switch Celsius/Fahrenheit Battery: Li-ion Battery (Ship with Battery) Battery Capacity: 230mah PackageList: 1 xAquarium Thermometer