Review on Doli Yearning Baby Bath Thermometer - Room Temperature Gauge (Fahrenheit & Celsius) - Yellow Turtle Design - Kids Bathroom Safety Essential - Bath Toy by Colleen Bolden

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.