Good to know - This Tommee Tippee in-ear thermometer let's you check your baby's temperature in just 1 second - Know why your little one's cranky - get a fever alarm as soon as their temperature shoots up   - You can connect it to your smartphone and store up to 20 readings to track your baby's health - Switch easily between Fahrenheit and Celsius and get the readings according to your choice - So smart yet so simple to use - just place it's tip on your baby's ear and press the scan button- It's safe to use on babies aged 3 months and older