Perfect, exactly what l was looking for
This is a perfect bathtub thermometer. Flashes blue when the temp is below 90 degrees, light is off from 90 to 102, and the light flashes red when over 102. No on/off button, just shake it or toss it into the empty tub to turn it on. After a certain time without movement it auto shuts off. It has always stayed on until the bath is over so they nailed the auto off as well. The only negative is getting my kid to leave it in the water instead of playing with it, and l am calling that a win too. It's easy to use, durable, does exactly what it's supposed to do, and the convenient flashing light let's you know with a glance from across the room if the temperature is too hot/cold. Very happy with this purchase. Read more













