Apple Watch Series 12 and Ultra 4 Owners Report Skin Irritation

Owners of the new Apple Watch Series 12 and Ultra 4 report burning and redness under the sensor area. The watches take heart rate readings every five seconds and have a larger ECG electrode and ring-shaped photodiodes. Apple advises a proper band fit and keeping the watch clean and dry; some users returned their devices.

• Users report burning and redness under the sensor area
• Series 12 and Ultra 4 read heart rate every 5 seconds
• New models have a larger ECG electrode and ring photodiodes
• Apple advises proper band fit and regular cleaning