Review on Doli Yearning Turtle Shape Baby Bath Thermometers – Fun Baby Bath Toys and Gifts, Interactive Squirting and Squeaking Bath Toys for Boys and Girls, Exciting Shower Favor, Spray Water Bath Toy... by Theresa Kirkland

So far so good. It has a blue indicator light when the water is too cold and a red indicator light when it is too hot. You don't have to turn it on, just drop it in the water and it will start measuring the temperature. Has f° and c° options. Also included was an extra set of batteries. Worth the money for knowing my child's water is the right temperature. I am a mother of four and I still don't know if the temperature is right or not.