Can Apple Watch 4 be used without iPhone?

Related questions

1. Can the Apple Watch make calls without an iPhone?
2. What's in an Apple watch?
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5. Can you set up an Apple watch without an iPhone?

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5. #calibrate
6. #series
7. #notifications
8. #nearby
9. #iphone
10. #party
11. #accuracy
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14. #paired
15. #receive
16. #watch