Overview: When babies are not feeling well, they cry because they cannot say what is wrong. During the day, it is ok but once in night, parents are usually very painful, very easy to fall asleep and ignore to measure temperature, however, fever is more likely to occur in the night and the traditional thermometer are measured every one or two hours. To give parents peace of mind, we need a device that can quickly and accurately measure temperature and track historical data. As parents, you could not find anything on the market that could satisfy our needs. That's why we created MONITEC thermometer to help parents monitor and track temperatures more efficiently for infants and old need to always pay attention to their body temperature changes. Features: FDA certification: MONITEC smart thermometer has acquired FDA medical machinery certification. Supported models: Iphone 4S and above, or mobile phone Android 4.3 and 4.3+. Application Scope: Suitable for continuous monitoring of body temperature. Contraindications: armpit skin damaged, skin inflammation disabled. APP: Free smartphone and tablet app for iOS and Android. Product Parameters : Operating ambient temperature range: 41â„‰-104â„‰ Temperature range: 32â„‰-122â„‰ Package Size: 7x3.8x1.5 inch Product Diameter: 1.2 inch Product Thickness: 0.3 inch Gross weight: 0.3 ounce Duration: 3 years Package includes: 1x professional medical sticker 1x thermometer 2x bell battery Warm Notice: Put the thermometer in your palm, rotate it clockwise or counterclockwise, then you can open /close it easily. Please read the user manual carefully before using.