How to measure your wrist?
Apple Watch strap: How to measure your wrist Well, get out the flexible tape measure and size up that wrist. Hold the strip just below where your wrist bone sits and around where you would normally wear the band, wrap it around your wrist and line that up with the sizes of your Watch model.
Alternative Measuring Technique
Fine. First, download an app on your smartphone, like the Measure app for iPhone or the Ruler app for Android. Then, take the string, shoelace, or paper from steps 1 or 2, mark your wrist size with a pen, and use the app to get an accurate measurement.
To measure your wrist for Apple Watch take a flexible tape and hold it just below where your wrist bone sits – at the place where you are likely to wear the band. Wrap the tape around your wrist to measure the Apple Watch size.
If wrist detection is enabled, the device locks automatically soon after it's removed from the user's wrist. If wrist detection is disabled, Control Center provides an option for locking Apple Watch.
Step 1: Open the Watch app on your iPhone.
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Measure the broadest part of your wrist, between the wrist bone and the base of the hand. Use a flexible tape, something like a sewing measuring tape. If you don't have a measuring tape, use a piece of string to wrap around your wrist and then measure this on a ruler afterwards.
Our results thus show good accuracy of HR measurements by the Apple Watch when compared to the gold standard ECG measurements when tested in patients with known heart disease. For EE, SDD was 17.5, and bias was 30.47. The ICC is 0.797, which is considered good correlation.
Apple Watch band sizing is easy - when you follow a simple guide.
Wrap the tape loosely around your wrist. Take measures. If you're using plain tape (or string), mark the ends with a pen, and then flatten the tape on a hard surface and measure it with a ruler. Add half a centimeter above the measurement to be safe.
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