-Three protocols: quick reflex reps, long endurance holds, or a mixed daily session -Vibration-cued squeeze and release — train hands-free, eyes-free -A fill gauge you can read at a glance -Up to three daily reminders, editable to any time -Reminders run watch-side, with or without your phone -Pause, skip, and resume mid-session -Settings saved between sessions -No account, no companion app, nothing leaves the watch