Features:1.The digital swimming pool thermometer has a high precision temperature sensor to ensure accurate temperature readings. The temperature range tested is: approximately -40--140 degrees Fahrenheit. Use a convenient method to monitor the temperature of bath water and outdoor swimming pools.2.The solar pool thermometer is made of high quality material, durable, anti-oxidation, long life, suitable for indoor and outdoor use.3.Put the floating pool thermometer directly into the water and wait 1-2 minutes to read the degree. The thermometer displays the temperature in Fahrenheit and Celsius, and the data is easy to read.4.Floating thermometers are the best option for enhancing swimming pleasure. Perfect for home pools, spas, pool spas, hot tubs, aquariums and fish ponds.5.If you have any problem with your product, please feel free to contact us, we will provide you with satisfactory service. Note: After installing the battery, please be careful to tighten the product to prevent water from entering.Specifications:Product weight: 339gPackaging size: 10*17*9cm