User Guide of Fitbit Charge 2 description

Fitbit motivates you to reach your health and fitness goals by tracking your activity, exercise, sleep, weight etc. It is a solid fitness tracker for someone that wants to stay in shape.

Feature of Fitbit Charge 2
# PurePulse continuous, automatic wrist-based heart rate tracking to better measure calorie burn all day.
# Maximize your workouts using simplified heart rate zones (Fat Burn, Cardio and Peak)
See call, text & calendar notifications on the OLED display; Automatically track how long and how well you sleep and wake with a silent vibrating alarm.
# Get a better understanding of your fitness level and see how you can improve over time with a personalized Cardio Fitness Score; Use Connected GPS during run mode to see real-time stats like pace and distance on your wrist.