Keep an eye on your health and all your messages with the Apple Watch Series 6 44mm Space Gray Aluminum Black Sport Band. With the pulse oximeter, Apple Watch meets the oxygen level in your blood. With this data, Apple Watch provides insight into your fitness and your stress level. Thanks to breathing exercises and mindfulness, you can lower that level with the Apple Watch. The always-on screen shows you handy notifications all day long. Even when the sun is shining on it, because the Series 6's screen is brighter than its predecessor. Apple Watch has its own sleep tracker. Wear the Apple Watch at night and you will see exactly how deeply you slept the next day.