Brand new in box. Never opened. -Earn active zone minutes as you progress toward your weekly 150 minutes of heart-pumping activity and use 20+ exercise modes to track goals like distance, calories burned and more -Track all-day activity: your steps, distance, hourly activity and calories burned -Use 24/7 heart rate to track resting heart rate better measure calorie burn -Enjoy 10 days of battery life for daily progress without constant charging varies with use and other factors -Track your time in light, deep and REM sleep, then get a Sleep Score to better understand your sleep quality each night -Stay inspired from the shower to the pool with this swimproof tracker (water resistant to 50 meters) and motivated by connecting with friends, competing in challenges, earning badges and celebrating goal milestones -Get call, text, calendar and smartphone app notifications right on your wrist. Notifications and app alerts are available on-device when your phone is nearby