More new features are trickling back to older devices

Fitbit has released its SpO2 watch face for Fitbit Versa and Ionic devices, which lets users get in touch with their blood oxygen levels.

The feature was actually part of the Fitbit Sense and Versa 3 launch event, but it’s landed on the Fitbit App Gallery ahead of those devices. Fitbit’s new smartwatches are due to land on 25 September.
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https://www.wareable.com/fitbit/fitbit-versa-ionic-spo2-watch-face-8081