Funny Cartoon Toy - With cute fish design and easy-to-grasp size, this digital baby bath thermometer can also be played during the bath time. Because every edge is shaped round and smooth, it will never get baby hurt when playing, therefore can be a perfect bath toy. IPX7 Waterproof - Every BabyElf bath thermometers is tested for water resistance and temperature before leaving the factory. The bath water temperature will be re-measured and updated again every 5 seconds, displayed in Fahrenheit degrees on the LED screen. Safe and Eco-friendly Materials - This baby bathtub with thermometer is made of high quality material which is BPA free, Long-lasting, safe and harmless built-in button cell. Easy to Use - Built with upgraded smart chip and sensitive sensors, the bath thermometer will automatically measure the temperature as soon as thrown into the water. Almost instant displays water temperature in seconds, with clear readings at a glance. Reliable Thermometer - Unlike traditional alarm of which beeping sound often scares babies and dogs, our upgraded flashing alarm won't make any noise. When water is cool, the screen will display blue water drop; while the water is too hot, the screen will display red water drop. What’s more, you don’t need to change the batteries so soon because of the smart auto-off feature.