We knew it was coming, but the Apple Watch Series 6 is finally here. It has a little friend, too: the Apple Watch SE, a more affordable mid-tier option that’s slightly more advanced than the Series 3.
The big story here is the Series 6 adds the ability to monitor blood oxygen levels. The new sensor shines both red and infrared light onto your wrist, and then the new app lets you take a measurement in 15 seconds. It can also run in the background for when you sleep. Under the hood, the Series 6 also gets a new S6 processor which is up to 20% faster than the previous generation. The screen is also supposed to be 2.5 times brighter when outdoors and packs an always-on altimeter as well. Apple’s also upgraded the ECG feature. Previously on the Series 4 and 5, heart rates between 100 and 125