Product Details

Fitness rings are a great way to keep an eye on your health and stay up to date with your progress, whether you're monitoring changes in your schedule or changes in your blood pressure. The Merlin Smart HRV ring also has exceptional sleep tracking. It provides insightful data that surpasses what you would receive from a Fitbit or the best smart rings. For instance, it displays your HRV balance, temperature changes during sleep (which can be used to predict menstrual cycles), blood oxygen levels, and the duration of each sleep stage. In addition to its impressive sleep tracking, the MERLIN Ring also excels in activity tracking. It monitors your steps, calories burned (including active calories), heart rate during exercise, and training volume. When comparing its activity tracking to that of a Garmin Vivomove Sport watch, the Merlin AI Ring was within 200 steps of Garmin's tracked steps.