[R] How smartwatches check your O₂ ⌚
[R] How smartwatches check your O₂ ⌚
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Well now I need some really bright infrared lights
3this is more how a person can light themselves up with a uv flashlight
this didnt need to be a video, it could be a sentence: smartwatches use uv lights and cameras to measure blood oxygen levels
1IR light, not UV light. UV light can burn your skin and cause cancer to develop.
2yes, sorry, thank you
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