Best answer: The Fitbit Charge 3 doesn't work with music, podcasts, or any other audio product. Therefore, you can't use the Fitbit Flyer (or other wireless headphones) with the Fitbit Charge 3. If you want to use audio with a Fitbit product, we recommend the Fitbit Versa smartwatch instead.Fitbit: Fitbit Versa ($200)Fitbit: Fitbit Flyer Wireless Headphones ($130)