I won't get into the medical specifics, but essentially oxygenated and deoxygenated blood absorb red and infrared light differently, so the light that bounces back allows the Apple Watch to determine the color of your blood. Watch this: How pulse oximeters measure your blood oxygen levels ...
it also reflects red light, so every 10 minutes the Apple Watch’s infrared LEDs kick on to measure heart rate. Apple still uses its green LEDs as a fallback when the infrared readings aren’t adequate.
Apple says on its Apple Watch Ultra 2, Apple Watch Hermes, and Apple Watch Series 9 pages that "the ability to measure blood oxygen is no longer available on Apple Watch units sold by Apple in the United States after January 18, 2024. These are indicated with part numbers ending i...
HRV, or heart rate variability, is a measure of how steady your heartbeat is. Not how fast or how slow, but howdifferentof a time frame passes between beats. The differences are only measurable with precise equipment, but here's the basic idea: If your heart goes “beat…beat..beat…...
apple with a two-sided temperature sensor—one on the back of the smartwatch close to your skin and one under the display—the apple watch series 8 packs a new feature that can help detect changes in your body depending on your temperature. while asleep, it can measure your wrist ...
The Apple Watch 6 and 7 has a blood oxygen app to measure saturation, but what does that mean, and how do you do it? We show you how...
1. Open the Watch app. 2. Select the ‘Apps’ tab, then tap ‘Discover Watch Apps on iPhone’ or ‘Apple Watch Essentials’. 3. Install apps on your iPhone as normal – they will then also appear on your Apple Watch. How to delete Apple Watch apps ...
blood vessels in your wrist, and the photodiodes measure how much light bounces back. The rest requires some fancy medical knowledge, but oxygenated blood reflects different amounts of light depending on certain factors. Despite all that, how accurate is the Apple Watch blood oxygen sensor really...
Share of voice: Measure your online visibility compared to your competitors. With it, you can measure the long-term impact of your social strategy. Likes, shares and comments: These metrics help you calculate how well your UGC shares resonate with your audience. The more interactions you see,...
What is customer sentiment analysis and how do you measure it?The benefits of customer sentiment analysisFactors that affect customer experience and customer sentimentHow to measure customer sentiment3 steps to analyze customer sentimentHow to choose the best customer sentiment analysis tool for your ...