The company says it can track temperature changes down to 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 information about your ovulation cycle, which it can use to improve the watch’s cycle tracking feature for those who are menstruating. The company says that this data is encrypted on the watch itself — important for anyone tracking their cycles after Roe v. Wade. The Series 8 packs some new sensors into a familiar design. Image: Apple The company says the collision detection feature will only work while you’re driving, which helps preserve the watch’s 18-hour battery life. Apple is also introducing a low-power mode, which extends the watch’s battery life to 36 hours. The feature will also be available on older watches starting with the Series 4 as long as they’re running watchOS 9. Enabling the feature will disable the always-on display and automatic workout tracking, but you’ll still have activity tracking and collision detection. It also comes in older watches and the Series 8 is mobile roaming. Last year’s model, the Series 7, featured a slightly updated design that made the screen larger compared to previous models (but didn’t, as rumors suggested, introduce a radically new look with flat sides). Besides the redesign, it only included a few new features: faster charging, improved durability, and a few new colors. The 8 Series aluminum is available in four colors: midnight, starlight, silver and red. the stainless steel model is available in silver, gold and graphite. The green from the Apple Watch 7 is gone. Image: Apple The Apple Watch Series 8 has a lot of competition. Fitbit recently refreshed its line of smartwatches with the Sense 2, Inspire 3 and Versa 4, which cover a wide price range. Garmin’s latest generation of smartwatches has also garnered plenty of praise from critics. And while Samsung’s upcoming Pixel Watch and Galaxy Watches aren’t really competing for iPhone users’ wrists, it’s always interesting to see how Apple’s wearable stacks up against the flagships on the Android side. Development… for the latest details, check out our live blog.