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Learn how your Apple Watch uses light to measure your heart rate
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Have you noticed the green lights on the bottom of your Apple Watch and wondered what they are—or wondered how you can turn them off? The green lights on your Apple Watch are used to check your heart rate, but they can be turned off if they're annoying or you think they may be why your Apple Watch battery dying too fast . In this article, we'll explain what these lights do, how they work, and how you can disable them.
Apple Watch and Green Flashing Lights
The lights flashing on your Apple Watch are the heart rate sensor. They can be disabled in your watch's settings, but this will also disable the heart rate monitor.
Steps
Section 2 of 4:
Disabling the Lights via Your Apple Watch
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Press the Digital Crown and select the Settings app. The Settings app has a gray icon with gears on it.
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Select Privacy & Security > Health . This will open privacy settings relating to what health metrics your watch can gather.
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Toggle off heart rate. This will disable the green light sensors on the bottom of your Apple Watch.
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Section 3 of 4:
Disabling the Lights via Your iPhone
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