Lunar White Band with Gold Watch Used - Great; Never worn without screen protector; all functionality works as expected Includes: Watch + All Watchbands in Photos + 3 Chargers (not shown) Meet Fitbit Sense, the advanced health smartwatch that helps you tune in to your body and guides you toward better health. Assess your heart for atrial fibrillation (AFib) with a compatible ECG app right on your wrist, track & manage stress, better understand your sleep quality and even keep an eye on patterns in your skin temperature. Plus, Sense unlocks a 6-month Fitbit Premium membership for new users which includes personalized tools like Daily Readiness—so you can do what's best for your body. Fitbit is part of the Google family.