Aquatix Pro Large Floating Pool Thermometer Premium Water Temperature Thermometers with String, Shatter Resistant, for Outdoor & Indoor Swimming Pools, Spas, Hot Tubs, Aquariums & Fish Ponds (1) NO GUESS WORK: Aquatix Pro Pool Thermometers Provide Accurate Reading in Both Fahrenheit and Celsius. Maximum Temperature 120F and 50C. PREMIUM BUILD: Large Swimming Pool Thermometer, Exceptional Quality, Built from Durable Material & Shatter Resistant. EASY TO USE: Large Temperature Reading Display in Fahrenheit and Celsius. Reads Up to 100 Fahrenheit and 40 Celsius. COMPATIBLE: Ideal as a Pool Water Thermometer, Pool Spa Thermometer, Hot Tubs, Fish Ponds, Aquariums and All Other Types of Systems. OUR GUARANTEE: Complete 1 Year Warranty. If You Are Not Happy With Your Purchase We Will Issue a 100% Refund - No Questions Asked!