Skmei 1427 Fitness Tracker for Active LivingComprehensive activity tracking: Tracks steps, distance and calories burned to give you a clear daily picture of progress, so you can adjust workouts and reach goals faster. Continuous heart rate and sleep monitoring: Provides gentle, around the clock heart rate sensing and sleep stage summaries to help you optimize training intensity and recovery without guessing. Water resistant, durable design: Built to handle sweat, rain and everyday bumps so you