{"id":29580,"date":"2025-08-28T22:55:08","date_gmt":"2025-08-28T22:55:08","guid":{"rendered":"https:\/\/www.europesays.com\/ie\/29580\/"},"modified":"2025-08-28T22:55:08","modified_gmt":"2025-08-28T22:55:08","slug":"apple-watch-ultra-2-beats-garmin-whoop-samsung-and-other-smartwatch-brands-in-sensor-comparison","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/ie\/29580\/","title":{"rendered":"Apple Watch Ultra 2 beats Garmin, Whoop, Samsung and other smartwatch brands in sensor comparison"},"content":{"rendered":"<p class=\"bodytext\">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.&#13;<\/p>\n<p class=\"bodytext\">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&hellip;\n","protected":false},"author":2,"featured_media":29581,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[258],"tags":[23568,1820,18,282,1821,23571,19,17,1815,1819,1814,1822,23572,1818,1142,1143,23570,1812,82,1817,1816,23569],"class_list":{"0":"post-29580","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-gadgets","8":"tag-apple-watch-ultra-2","9":"tag-benchmarks","10":"tag-eire","11":"tag-gadgets","12":"tag-graphics-card","13":"tag-herzfrequenz","14":"tag-ie","15":"tag-ireland","16":"tag-laptop","17":"tag-netbook","18":"tag-notebook","19":"tag-processor","20":"tag-puls","21":"tag-reports","22":"tag-review","23":"tag-reviews","24":"tag-sensoren","25":"tag-smartwatch","26":"tag-technology","27":"tag-test","28":"tag-tests","29":"tag-watchos-26"},"share_on_mastodon":{"url":"","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/posts\/29580","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/comments?post=29580"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/posts\/29580\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/media\/29581"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/media?parent=29580"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/categories?post=29580"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/ie\/wp-json\/wp\/v2\/tags?post=29580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}