To use Fitbit Pay, you need a compatible Fitbit device, which includes the Ionic and Versa smartwatches and the Charge 3 fitness band. Mobile payments require NFC (near-field communication) and a display. If your Fitbit doesn’t have a screen, it definitely won’t work with Fitbit Pay. When you’re ready to set up Fitbit Pay, make sure your compatible device is nearby. First, check Fitbit’s running list of participating banks, which also includes countries where the service is available (more than 20 at launch).
Tap the Account icon in the top-left corner of the screen.
Select your device.