But, the Apple Watch’s built-in oximeter measures oxygen levels at the wrist. When clipped to the fingertip, a standard pulse oximeter projects infrared light on one side of the fingertip. It then detects oxygen concentration on the other side of the fingertip. The Apple Watch works similarly by measuring blood oxygen levels using infrared light.
Once you open the Health app on your iPhone, look for the “ Respiratory Rate: Sleep ” card under the Summary tab. In case you cannot find the respiratory rate summary, go to Explore tab from the bottom. Tap on the “ Respiratory ” option on the screen. Select Respiratory Rate from the next screen and there you go.With the hand opposite your watch, hold your finger on the Digital Crown, then wait while Apple Watch records the ECG. You don’t need to press the Digital Crown during the session. At the end of the recording, you receive a classification. You can then tap Add Symptoms and choose your symptoms. Tap Save to note any symptoms, then tap Done.Select version: Table of Contents Measure blood oxygen levels on Apple Watch Use the Blood Oxygen app on Apple Watch Series 6 or later to measure the percentage of oxygen your red blood cells carry from your lungs to the rest of the body. Knowing how well oxygenated your blood is can help you understand your overall health and wellness. Thankfully, your Apple Watch can measure your blood oxygen level. If you have an Apple Watch Series 6 or later on your wrist, you can check your blood oxygen level by opening the Blood Oxygen app. Rest your arm on a flat surface and ensure your wearable is snug but not too tight on your wrist. After 15 seconds, you will have your blood oxygen BbrwiwK.