Description: 100% brand new and high quality. Clear and easy to read scale that tells you, unmistakably what the temperature is in BOTH Celsius and Fahrenheit degrees. It floats and is secured by a included suction cup. Easy to install, just drop it in the tank and attached the suction cup to the inside of the tank for accurate reading. Being that this thermometer is inside the tank, it gives a much accurate reading of the water temperature than those placed on the outside Material:Glass Test range: 0 ~ 4 Size: about 7cm Quantity: 1 pc Package includes: 1 x Glass Tube Aquarium Fish Tank Thermometer Temperature Submersible SuctionNotice: 1.Please allow 1-3cm error due to manual measurement. Please make sure you do not mind before you bid. 2.The colors may have different as the difference display, please understand.