Fitbit Flex 2 Wireless Activity Tracker

Track steps, distance, calories burned and active minutes
Ultra-thin, removable tracker hides in bands, pendants and bangles
Swim-proof for tracking swimming, life-proof for wear in the ocean, shower, pool and beyond
Smart track automatically recognizes select workouts and records them to your Fitbit app
Automatically track how long and how well you sleep and set a silent alarm to wake with a small vibration