Samsung is ramping up its focus on health. The company recently showed off its latest health-tracking wristband, the Simband. The Simband, a sort-of hybrid between a smartwatch and fitness tracker, uses different wavelengths of light to continuously track things like your blood pressure, respiration, heart rate and more. It then takes that raw data and converts it into a stream of information for you to interpret. The Simband is powered by a “shuttle battery,” which re-charges while you sleep. That means you can wear the device 24 hours a day to make sure you get complete readouts. For now, the Simband is still an “investigative device,” according to Samsung, which means it’s not available for purchase. But more importantly, it’s the first device Samsung designed around its new platform, SAMI. SAMI was made to unite health trackers from every manufacturer. Samsung wants to make wearable sensors more accurate and make them more readily available, and SAMI – and the Simband – are the first steps.