Remember the SunSprite? A solar-powered bright light tracker that helps you monitor your light exposure and avoid overexposure to the sun? The device is now on Amazon. For those of you not familiar, this is a compact wearable device that pairs with your iPhone to let you know how long you can stay in the sun. It is completely solar-powered, so you don’t have to charge it using a cable. It uses LED lights to show how much progress you are making. The companion app gives you personalized coaching. You can get this wearable for $99.99.