Review on Accurate And Versatile: Blufree Floating Pool Thermometer For Pools, Hot Tubs, Spas And More by Richard Bowens

I use the little duck in my pool and sometimes in the hot tub. It looks happy in the pool leashed to handrail by the convenient lanyard. I use it to determine how long to run the heater in cooler weather to reach a good comfort level. The temperature readings on thermometer and the thermistor on the pool system match which removed doubt as often the "feel" of temperature when swimming was varied - having the little duck gives a real temperature, the body feel in not.PS - our pet dog is also fasinated with the new "toy".