Apple Watch Series 8

Apple Series 8 features the same 41mm and 45mm display options with an edge-to-edge Always-On Retina display with up to 1000 nits of brightness. Apple has included a temperature sensor in the Apple Watch Series 8. The sensor is sensitive enough to sense a 0.1 degree Celsius temperature change in your body. Plus, the Series 8 apple watch take your wrist temperature during sleep every five seconds.