Apple has announced its latest wearable, the Apple Watch Series 8. It includes a new temperature sensor, which Apple says “takes its commitment to women’s health even further.”

The company says it can track temperature changes as slight as 0.1 degrees Celsius and that it checks your temperature every five seconds. The company says that tracking your body temperature overnight can help give you insights into your ovulation cycle, which it can use to enhance the watch’s cycle tracking feature for those who menstruate.

Last year’s model, the Series 7, featured a slightly updated design that made the screen bigger compared to previous models (but did not, as rumors suggested, introduce a radically new look with flat sides). Aside from the redesign, it only included a few new features: faster charging, improved durability, and some new colors.

The Apple Watch Series 8 has a lot of competition. Fitbit recently revamped its smartwatch lineup with the Sense 2, Inspire 3, and Versa 4, which cover a wide range of price points. Garmin’s latest generation of smartwatches has also garnered a lot of praise from reviewers. And while the upcoming Pixel Watch and Samsung’s Galaxy Watches aren’t really competing for iPhone users’ wrists, it’s always interesting to see how Apple’s wearable stacks up with the flagships on the Android side.

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