Track your sleep, cycle, activity, blood flow, and more. Beautiful enough to wear anywhere. Styled as jewelry, sized to disappear. If you are tired of bulky smartwatches and fitness rings that clash with your personal style, a new breakthrough in wearable tech is here. Lumia Health has launched the Lumia 2 Smart Earrings on Kickstarter, claiming the title of the world's smallest wellness wearable. Weighing less than a single gram, this device packs elite level blood flow moni