Fitbit Air vs. Whoop: Which screenless fitness tracker is better for you?
How locked in do you want to be?
How locked in do you want to be?<p><img src="https://www.engadget.com/img/gallery/fitbit-air-vs-whoop-which-screenless-fitness-tracker-is-better-for-you/intro-1792526649.jpg" /></p>
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