Gone are the days of replacing batteries and the inconvenience of plugging your device in to charge after Misfit and Swarovski revealed the world’s first solar-powered fitness tracker. Misfit is know for its clever tracker design, which can look like jewelry depending on how you wear it, so it was a natural fit for the blingy Swarovski. But even though it may look like a flashy piece of arm candy, it is actually a very smart tracker that can help you get fit using the power of the sun.