L’Oréal UV Sense
TECH SPECS 
DescriptionUV Sense is the first battery-free wearable electronic UV sensor.
DesignUV Sense is tiny enough to wear on a fingernail, pair of sunglasses, running shoes, etc. – essentially any item that is exposed to the sun. Less than two millimeters thick and just nine millimeters wide. Out of the box it can be used for up to two weeks, but you get additional adhesives to extend its life. You can also clip it to things.
BatteriesBattery-free
ConnectivityConnect to your phone via NFC
DisplayChanges colour to indicate UV levels
FunctionalityShow UV and lets you know when its time to apply sun-screen.
Others
LINKS 
Affiliate link*To be launched in summer of 2018.
Read moreArticle
*Disclosure: We are a professional review site that receives a small commission from sales of certain items, but the price is the same for you. See our affiliate disclosure page for more details.
**All tech specs and images on this page come from manufacturers. These may change over time as manufacturers sometimes update their devices. While we cannot guarantee absolute accuracy of information on this page, we promise to review this content regularly and do our best to bring you the most up-to-date information. To be absolutely sure of tech specs of a particular device, we recommend checking the manufacturer’s website.