Changes to Step #4
Edit by Sam Goldheart —
Edit approved by Sam Goldheart
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- After
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Step Lines
| [* black] We turn our attention to the back of the case, where we find a composite cover with hard coated optical polymer lenses protecting a set of LEDs and photodiodes. |
| [* black] The specially designed heart rate sensor uses a combination of infrared and visible-light sensors to gauge your heart rate. |
| [* icon_reminder] Unlike the Apple Watch Sport, the back cases of the Apple Watch and the Apple Watch Edition feature a [http://www.precision-ceramics.com/3-reasons-apple-used-zirconia-ceramic-in-the-iwatch/|zirconia ceramic|new_window=true] cover with sapphire lenses. |
| [* black] Opposite the Digital Crown, we find the |
| [* black] Opposite the Digital Crown, we find the |