In addition to the heart rate sensor, Rob ter Horst also tested the sleep tracking of the Apple Watch Ultra 2. The reference device was a Hypnodyne ZMax, which records brain waves via EEG and is said to record sleep phases with 72% accuracy, according to studies. For comparison, the polysomnography (PSG) used in sleep labs has an accuracy of around 83%. In comparison to the ZMax, the Apple Watch Ultra 2 showed an accuracy of about 73% for REM and deep sleep and a pretty impressive 86.5% for light sleep. <\/p>\n
Compared to the competition, this result is excellent and even slightly surpasses the Oura Gen 4 Smart Ring. The Samsung Galaxy Watch Ultra 2, Whoop 4.0 and Garmin Fenix 7 are notably less accurate in this respect. However, it should be noted that this test and comparison only involved one unit of each wearable and a single person. Due to the small sample size, the results are only moderately conclusive of the overall performance and precision of said devices.<\/p>\n","protected":false},"excerpt":{"rendered":"In addition to the heart rate sensor, Rob ter Horst also tested the sleep tracking of the Apple…\n","protected":false},"author":3,"featured_media":188069,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_share_on_mastodon":"0"},"categories":[18],"tags":[30725,18106,705,18107,105289,18102,18105,18101,18108,105290,10545,2290,11853,105288,3742,158,18104,18103,67,132,68,30726],"class_list":["post-188068","post","type-post","status-publish","format-standard","has-post-thumbnail","category-gadgets","tag-apple-watch-ultra-2","tag-benchmarks","tag-gadgets","tag-graphics-card","tag-herzfrequenz","tag-laptop","tag-netbook","tag-notebook","tag-processor","tag-puls","tag-reports","tag-review","tag-reviews","tag-sensoren","tag-smartwatch","tag-technology","tag-test","tag-tests","tag-united-states","tag-unitedstates","tag-us","tag-watchos-26"],"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@us\/115120145917915963","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts\/188068","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/comments?post=188068"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts\/188068\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/media\/188069"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/media?parent=188068"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/categories?post=188068"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/tags?post=188068"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}