I've got what you would call a fair complexion. If I step out into the sun without a hat, umbrella, or liberal slathering of SPF 50, I'm going to turn into a human-tomato-onion hybrid. But that doesn't mean I always do it, especially during the workday when I may walk a few blocks to get lunch or cross town for a meeting.
Netatmo (the French company that previously made a slick, iOS-compatible weather station) designed a product to make you more aware of how much sun exposure you get each day. It's called June, and it goes on sale today.
Too much time in the sun can lead to premature aging signs like wrinkles, sunburns, and skin cancers. You can help minimize those negatives by being more conscious of your time outdoors, and taking the appropriate precautions when you do. And that's where June comes in. The little sensor (choose between silver, gold, or platinum) is shaped like a jewel. It pairs with an iOS app to monitor your exposure to UVA and UVB radiation, and its primary function it to nag you into wearing a hat, sunglasses, or sunscreen when it thinks you need protection. June's multifaceted jewel piece clips onto one of two bands that come with the unit (one is leather, one is synthetic) to be worn as a bracelet, or it can be clipped to a shirt or strap, acting as a brooch. Either way, it's very feminine.
The app offers a sun forecast for each day detailing the expected UV index, a measure of the expected risk of UV radiation from the sun on a scale of 0 to a skin-scorching 15, as well as what items you should bring in your bag that day: sunscreen, sunglasses, or a hat. For summer days in San Francisco which score a UV Index of 9, the app recommends SPF 50, but no sunglasses or hat. As you wear the June bracelet, the app tracks your activity in the sun in a timeline as your "sun dose." If you go over 100 percent of your sun dose, that means your skin is going to burn (eeps!).

