Apple Watch S12 was exposed to cause skin irritation. Some users experienced redness and burning sensation on their wrists after wearing it.

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Some Apple Watch Series 12 and Apple Watch Ultra 4 users have reported skin discomfort after wearing the new watches, and symptoms such as redness and burning sensation at the contact point between the wrist and the sensor.

Among them, an Apple Watch Series 12 user said that after wearing the new watch, a slight burning sensation continued to occur at the location where the sensor was contacted. It was not until he took off the watch to charge that he discovered that his wrist was red.

The user emphasized that he did not tie the watch strap too tight or too loose, and kept his wrist and the back of the watch clean, and the watch itself did not heat up.

It is worth noting that both Apple Watch Series 12 and Ultra 4 have upgraded their health sensors, and the heart rate monitoring frequency has been increased to once every 5 seconds.

At the same time, the new watch also expands the contact area of ​​the electrocardiogram electrodes, changes the photodiodes to a circular arrangement, and uses larger green LED lights.

Some users suspect that changes in these sensors may be related to skin discomfort, but there is currently no evidence to prove a direct connection between the two, and the specific reason is still unclear.

In fact, this is not the first time that Apple Watch has experienced similar skin irritation problems. As early as when the first-generation Apple Watch was launched, some users reported skin discomfort after wearing it.

According to Apple's official support document, skin discomfort after wearing Apple Watch may be related to improper strap tightness, skin allergies, and prolonged contact with skin by irritants such as sweat and soap.

Apple points out that a watch strap that is too tight may irritate the skin, while a strap that is too loose may cause friction. Therefore, the strap should be kept appropriately tight when worn to allow the skin to breathe normally.

Apple recommends that users keep their watches, straps, and skin clean and dry, especially after sweating during exercise or coming into contact with soap, sunscreen, and other substances.