Ultrahuman Ring Air in for review
Briefly

Despite its slender frame, Ring Air promises the standard array of health-tracking features found on smartwatches including continuous heart rate, HRV, SpO2 monitoring, detailed sleep tracking, step counting, and workout mode with precise heart rate tracking.
The Ultrahuman companion app offers detailed health and activity vitals alongside unique features like a stimulant restriction window tracker and a circadian rhythm tracker without any subscription model.
Read at GSMArena.com
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