Track your steps, distance, calories burned, active minutes, hourly activity and stationary time. Automatically track activities like running, sports and aerobic workouts, then see exercise summaries in the Fitbit app. Automatically track how long and how well you sleep, set a sleep goal and bedtime reminder to form good habits & wake up peacefully with a silent alarm. Track swimming automatically & see your exercise summary in the Fitbit app. Plus, never worry about making a splash-from bubble baths to beach days. When you get calls and texts, Flex 2 vibrates and the discreet LED display flashes color-coded lights, so you don�t miss the messages that matter. To help you stay active throughout the day, Flex 2 sends Reminders to Move that encourage you to take 250 steps every hour. With up to 5-day battery life in an ultra-slim package, you can track all day and night without needing a charge. Flex 2 syncs wirelessly and automatically to 200+ iPhone, Android and Windows devices.