Wearables company BSX Technologies announced today that it plans to tackle America’s most underestimated health problem – chronic dehydration – with a wrist-based fitness tracker that accurately measures your real-time hydration levels. LVL (pronounced “Level”) is the first ever wearable fitness device to accurately measure hydration, as well as heart rate, sleep quality, activity, calories and mood, in real-time using a smart sensor with patented red light technology.