CVS Health smarttemp Infant Bluetooth Thermometer allows you to keep a virtual eye on your infant or child without disturbing them via the free downloadable smarttemp app on your smartphone. Just place one of the included adhesive strips on the thermometer and secure it under your child’s arm to comfortably and reliably track their temperature. A graph will show you the fever’s progression over time while medicine reminder alerts and high-fever alarms will give you peace of mind to get a good night’s rest of your own. 1. Download app on smartphone; use as guest or register an account 2. Secure thermometer with adhesive and place under your child’s armpit 3. Receive continuous notifications within minutes: medicine reminders fever alerts temp readings tracking 4.Replace adhesive after 24 hours; continue to monitor when needed Powered by infanttech Continuous, accurate temperature monitoring Won’t disturb sleeping infant Alerts when fever strikes Medicine reminders Sealed unit, 100% waterproof Compatible with smartphones and tablets with Bluetooth 4.0 running Apple operating system iOs 7.1 or later or Android operating system 4.3 or later. Meets ASTM & ISO Standards for accuracy.