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MacRumors · October 7, 2026 — 21:02

Apple Watch Series 12, Ultra 4 Owners Report Skin Irritation

Apple Watch Series 12, Ultra 4 Owners Report Skin Irritation
Image: MacRumors

Some Apple Watch Series 12 and Ultra 4 owners have experienced unexpected skin irritation with the new models, according to reports on the MacRumors forums and Reddit. Affected users complain of a burning sensation and redness under the sensor area. The Apple Watch Series 12 and Ultra 4 measure heart rate every five seconds, and some people have wondered if…

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