The Apple Watch is finally adding sleep tracking — the big feature it's been missing that Fitbit has offered for years (AAPL)

Business Insider

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· Apple just announced a new sleep tracking tool for the Apple Watch during its Worldwide Developers Conference.
· Sleep tracking was one of the few few features the Apple Watch lacked compared to Fitbit and other rival fitness trackers.
· The Apple Watch will use motion sensors, heartbeat sensors, and microphones to keep...

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