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lotofácil valor do prêmio AdvertisementI do think that sensor will eventually be important, and it hints at Apple鈥檚 future plans for the watch. But right now, my blood oxygen level is just another metric I have to hunt for in the iPhone Health app.WearablesAppleWearablesAppleApple Watch Series 6Apple Watch Series 6What is it?Apple's flagship smartwatchPriceStarts at 0 for the 40mm GPS modelLikeLonger battery life and faster charging; stunning new colors; potential to be an even more capable health trackerNo LikeThe potential for deeper sleep analysis and even more advanced health-tracking is unrealized鈥攆or nowAdvertisementAdvertisementBuy Apple Watch Series 6 for 0 from AmazonLet鈥檚 Talk About BloodThe Series 6 was redesigned to include the blood oxygen sensor. The watch鈥檚 back crystal now includes four clusters of red, infrared, and green LED lights, and four photodiodes situated between them. The red and infrared lights shine through your skin to the blood vessels beneath your wrist, and then the photodiodes capture that light. If your blood is dark red, it鈥檚 less oxygenated; bright red blood is more oxygenated. Advertisement setTimeout(() => const adSlot = document.querySelector(.apscustom); const adFallback = document.querySelector(.ars-fallback); if (adSlot) if has been read, but theres no ad, then show the fallback if (adFallback && adSlot.offsetHeight Caitlin McGarry/GizmodoAdvertisement(There has been some question as to whether blood oxygen measurements may be skewed by skin tone. Anecdotally, my husband, who is Latino with brown skin, has no known health issues and his levels on his own Series 6 were consistently in the normal range as well.)The Series 6's SpO2 sensor is not an incredible advancement for smartwatches. Fitbit鈥檚 wearables have included one for years. They aren鈥檛 capable of blood oxygen level spot checks, like the Series 6 is, but, like the Apple Watch, they don鈥檛 do anything with that data either. It鈥檚 just another metric in an app.AdvertisementApple launched three clinical studies with research partners alongside the Series 6 release to examine the link between blood oxygen levels and asthma, heart failure, and respiratory viruses (like covid-19 and the flu). If a link is found, Apple could then use those results to develop diagnostic tools and submit them to the U.S. Food and Drug Administration for clearance. But that鈥檚 a ways off, if it happens at all. Until then, you can use the Series 6 to keep on eye on your measurements, but the watch itself won鈥檛 actually tell you if there鈥檚 something to be concerned about. I鈥檓 excited about the Series 6's potential, but that鈥檚 all it is right now.Still a Fantastic Fitness TrackerAside from the blood oxygen sensor鈥檚 capabilities, the Series 6 is packed with all the same health-tracking features you get in the Series 4 and 5, including the electrical heart rate sensor that enables the FDA-cleared ECG app (which can diagnose atrial fibrillation). And the Series 6 is an excellent fitness tracker, like the Apple Watches that have come before it. It鈥檚 single-handedly motivating me to be active during California鈥檚 ongoing pandemic-related lockdown, although I did adjust my Stand goal down from 12 hours to 10, because life is hard enough.AdvertisementThe Series 6's always-on altimeter (which is also included in the Watch SE) is neat if you鈥檙e a nerd when it comes to elevation. I used the watch to track a hiking workout, adding the elevation complication to the watch face, and it was pretty neat to watch my climb in real time from 350 feet above sea level to more than 1,200. Apple Watch Series 6 or Watch SE: Which to Buy? CCShare SubtitlesOffEnglishShare this VideoFacebookTwitterEmailRedditLinkThe watch also now tells you your Vo2 Max score, which is a measurement of the oxygen your body uses during exercise. A higher score means your cardio fitness level is pretty good. But the iOS Health app, where all of these metrics live, doesn鈥檛 tell you what a good score is. Mine ranges from 31-37, but I had to Google to see what that meant. (Apparently it鈥檚 fine. Phew.) The normal range varies depending on age and sex, which the Health app also doesn鈥檛 tell you. Given how much the watch knows about me, including my age, weight, heart rate, even when my periods happen, I expect it to give me more context about my health data.AdvertisementAnd that鈥檚 my biggest issue with the Series 6. It鈥檚 capable of so much鈥攖racking my sleep, monitoring my blood oxygen levels, measuring my cardio fitness鈥攁nd yet it fails to contextualize those metrics for me. The Apple Watch is very good at measuring things. I just wish it would use those measurements to give me advice.Improved, but Not Impressive, Battery LifeThe question I get asked most often about the Series 6, aside from the health-tracking features, is about battery life. AdvertisementAn iFixIt teardown revealed that the Series 6 has a slightly larger battery than its predecessors, and in my experience, the watch lasts about 30 hours on a charge. That includes wearing it overnight to track my sleep and about 60 minutes per day of GPS-tracking workouts like outdoor walks and running. Sleep-tracking drains the battery by about 10% (when I used a Series 4 to track my sleep, that drain was closer to 20%). Is it the longest-lasting smartwatch you鈥檒l find? No! Definitely not.Apple improved charging time in addition to battery size with the Series 6, and the difference is noticeable. You can go from a dead battery to 80% in an hour, and to 100% in 90 minutes. I鈥檓 usually at 35% when I charge up before bed, so it usually takes about 45 for my watch to charge while I read a book or watch TV. My iPhone now alerts me when the watch is fully charged, so I don鈥檛 forget to slip it back on my wrist. It鈥檚 not a big deal to me, and it鈥檚 now part of the routine. But other watches last much longer than the Apple Watch, and that鈥檚 just a fact.AdvertisementThe Series 6 sports longer battery life and charges up faster than previous watches.Photo: Caitlin McGarry/GizmodoSleep-tracking is part of watchOS 7, not specific to the Series 6, and honestly, it鈥檚 just OK. It just doesn鈥檛 tell you that much, except for how long you slept. When it comes to sleep-tracking, Fitbit still does it best. Its smartwatches break down your sleep into light, deep, and REM, and provide more information around those sleep stages and how they affect your overall health. That鈥檚 what I want from the Apple Watch.AdvertisementBut I do like wearing the watch to bed solely because I find waking up to its wrist taps much more pleasant than an iPhone alarm.Better, Brighter, FasterThere are three other features that separate the Series 6 from the Series 5: Colorful new finishes (as you can see, the red and blue aluminum models are gorgeous), a brighter display, and a speedier S6 system-in-chip. None of those are worth upgrading from the Series 5, but if you own a Series 3 or older, the improvements will be noticeable.AdvertisementPhoto: Caitlin McGarry/GizmodoPhoto: Caitlin McGarry/GizmodoPhoto: Caitlin McGarry/Gizmodo 1 / 3Here鈥檚 my recommendation: If you have an older Apple Watch and are considering an upgrade, the Series 6 is the watch to get鈥攊f you really care about your health. If you have a Series 4 or 5, hold off until Apple enables features that use the blood oxygen sensor (or blesses us with a watch redesign, potentially with the Series 7?). And if you鈥檙e brand new to smartwatches in general, the Apple Watch SE is cheaper than the Series 6 and also very good.AdvertisementThe Series 6 feels like an incremental improvement, for now. But it鈥檚 capable of so much more. READMEThe Series 6 adds a blood oxygen sensor but doesn鈥檛 diagnose or contextualize those measurements鈥攜et.Larger battery and faster charging are great, but you still need to charge every day.Brighter display and always-on altimeter are useful for workouts like hiking.watchOS 7 brings sleep-tracking, hand-washing timer, and new workouts, but you get those on older watches, too.New red and blue aluminum finishes are fetching!