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What Do the Red and Green Lights on Your Apple Watch Mean?

Is your Apple Watch flickering green LEDs at the bottom without reason? If you’re not using them, why you will not turn them off? After all, you could save battery life if you don’t use them. Right? First, you need to know exactly what’s going on with your Apple Watch. It’s possible that you won’t regret keeping those lights.

What’s the Meaning of Green Lights? Did You Know?

The Apple Watch’s most important functions are related to health. If you wear that, it helps to track your everyday activities, optimize your exercises, and measure heart rate. Do you know about the technology behind your Apple Watch’s heart rate readings? The solution is the flickering of the green lights in and out.

When it comes to the optical heart sensor on your iPhone, the technique is known as photoplethysmography. I know it’s an awkward name, but it’s an interesting idea.

The effective method is based on the fact that blood is red. Isn’t this shocking? It’s also interesting to note that blood is red because it reflects red light and absorbs green light.

In order to determine how much blood is flowing through your wrist veins, the Apple Watch employs a mix of green LED lights and light-sensitive photodiodes. Greenlight absorption and blood flow increase as your heart beats more frequently.

Your Apple Watch counts the number of times your heart beats every minute by flashing the green LED lights hundreds of times per second. Using this information, your Apple Watch can accurately calculate your heart rate.

How Did You Turn Off Your Apple Watch?

The green lights on your Apple Watch are doing their job, therefore there is no danger in leaving them on. However, you have the option of turning off these lights if you so want. Of course, this means you won’t be able to use your Apple Watch to monitor your heart rate.

How To Disable The Green Light on Apple Watch? 

  1. Use your Apple Watch’s Digital Crown to adjust the time
  2. Go to the app’s settings
  3. Go to Privacy at the bottom of the page
  4. Select Health from the drop-down menu
  5. Heart Rate may be tapped
  6. Turn off the heart rate monitor

How To Disable The Green Light From Your iPhone?

  1. Open the Watch app from your iPhone
  2. Select Privacy from the drop-down menu 
  3. Activate or deactivate the heart Rate

Note: If you turn off this option, you may measure your heart rate manually. Your Apple Watch will begin measuring your heart rate as soon as you open the Heart Rate app.

What Should I Do If My Apple Watch Has Red Lights?

Apple Watch Series 6 and Series 7 owners may have noticed a handful of red lights on the rear of their watches after they first got them.

Red and Green LED lights, as well as infrared lights, are used by your Apple Watch to illuminate your wrist. The amount of light reflected back is measured using photodiodes.

The data is calculated by your Apple Watch to determine your blood color. You may use the color to tell how much oxygen your blood has. If your blood is a bright red color, it has more oxygen than if it is a deeper red color.

How Do I Turn These Off the Red Lights? 

There’s really no compelling reason to disable the blood oxygen sensor, like heart rate. You may switch off the red lights if you feel irritated.

How to Turn Off Apple Watch Blood Oxygen Monitoring?

  1. Press the Digital Crown button on your wrist
  2. Go to the app’s settings
  3. Go to the Blood Oxygen section by scrolling to the bottom of the page
  4. Activate or deactivate Blood Oxygen Measurements
  5. You may also deactivate Background Measurements by scrolling down to the bottom of the screen and unchecking the box

How to Turn Off iPhone’s Blood Oxygen Sensor? 

  • Launch the Watch app
  • Select Blood Oxygen from the drop-down menu
  • Deactivate Oxygen Monitoring

If you just want to deactivate background measurements while in Sleep Focus or Theater Mode, you may do so by scrolling to the bottom of the page.

Because of your choice, it may be impossible to monitor your blood oxygen. If you wish to use this feature again, you’ll have to activate it.

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