Solar-charged micro-weights meet intelligent fitness tracking
SunGains wristwatches feature integrated micro-weights (0-5 lbs per wrist) that track every rep while transparent solar faces charge from sunlight during your outdoor workouts. Our companion app optimizes your training to maximize both fitness gains and natural vitamin D production—without the burn.
You're doing outdoor curls on a sunny day, and your watch display shows a real-time vitamin D synthesis progress bar filling up alongside your rep counter—then you get a notification: "Battery +15% from solar"—you're literally getting stronger while your device charges itself from the same sun that's powering your health.