Excellent Quality: Made of durable materials, the floating water thermometer has excellent quality with anti-drop function. An ideal choice: The floating water thermometer is an ideal choice for pool water thermometers, pool spa thermometers, hot tubs, fish ponds, aquariums and all other types of systems. Temperature reading range: the range The water thermometer’s temperature reading range is 20 to 120°F / -10 to 51°C. Durable materials: The pond thermometer is made from durable materials and features a anti-drop function, so it can be used for a long time. Suitable occasions: the water thermometer is suitable for paddling pools, swimming pools, hot tubs, baby pools, ponds fish tanks, hot tubs, spas and large aquariums etc.