MaterialDurable and unbreakable ABS plastic material. Eco-friendly PVC, safe, non-toxic and odorless. The connecting rope prevents the thermometer from floating, shockproof, which is suitable for indoor and outdoor use. Dual Display TemperatureHigh-precision temperature sensor provides accurate temperature reading. temperature and a flexible temperature range from 0C to 50C. The pool thermometer gives the temperature in Fahrenheit or Celsius, reads the temperature up to 50/120. Easy to use Just drop it in your pool, spa, pond or whatever you want to use. This lets you know the water temperature at all times. The floating thermometer is ideal as a swimming pool water thermometer, spa thermometer. Quite easy to readDigital thermometer with large digits keeps your eyesight. kids are able to read it too. ApplicationIdeal as swimming pool water thermometer, pool spa thermometer, spas, fish ponds, aquariums and other kinds of systems.