crwdns2933803:04crwdne2933803:0
crwdns2933797:0Geoff Wackercrwdnd2933797:0crwdne2933797:0
crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Geoff Wacker
- crwdns2933769:0crwdne2933769:0
- crwdns2933771:0crwdne2933771:0
- crwdns2933801:0crwdne2933801:0
crwdns2933807:0crwdne2933807:0
| [* 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 ceramic cover with sapphire lenses. |
| + | [* 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 speaker and microphone ports. |