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Level 1

20 points

Light from the back of apple watch

Does anyone know why it sometimes shows green or red light at the back of apple watch?

Apple Watch Series 6, watchOS 7

Posted on Jan 24, 2021 5:20 AM

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Level 1

54 points

Posted on Jan 24, 2021 5:41 AM

it is the blood oxygen and heart rate sensor.

it sometimes runs in the background.

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