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Add to SafariWhen comparing Polar M400 vs Fitbit Charge, the Slant community recommends Polar M400 for most people. In the question“What are the best fitness trackers?” Polar M400 is ranked 4th while Fitbit Charge is ranked 26th. The most important reason people chose Polar M400 is:
The "Sport Profile" feature allows you to customize what stats you want to see for each type of exercise. For example, you may want the GPS on for running but not for a circuit workout. These preset profiles save you from having to set up the device each time you exercise.
Specs
Question Ranking
Pros
Pro Gives you a lot of options for customizing different types of workouts
The "Sport Profile" feature allows you to customize what stats you want to see for each type of exercise. For example, you may want the GPS on for running but not for a circuit workout. These preset profiles save you from having to set up the device each time you exercise.
Pro Gives you custom activity goals suitable for your level
The daily activity goal is a good way to find out how active you really are in your everyday life. Here you can choose your typical activity level from three options and see how active you need to be to reach your daily activity goal.
The time you need to complete your daily activity goal depends on the level you have chosen and the intensity of your activities. Age and gender also affect the intensity you need to reach your daily activity goal.
Pro Detailed reports
The fitness tracker offers excellent reporting including distance, speed, cadence, heart rate (if paired with monitor), ascent, decent, calories, recovery status, and more.
Pro Ability to add training notes
The app allows you to add additional notes to your workouts for better tracking.
Pro Integrates social features
Users can see their friends' activity, compete one-on-one, and earn badges.
Pro Battery lasts a week or more on a single charge
The battery is rated for 7 days, and has been tested up to 9 days by reviewers.
Pro Multifunction display
In addition to fitness metrics, a Fitbit Charge synced with a phone will display time and caller ID.
Pro Smart alarm wakes you up at the optimal time
The Charge tracks sleep cycles, and its alarm can be configured to take this into account, attempting to select an optimal wake time.
Cons
Con Sleep tracking lacks detail and accuracy
If you are awake for an extended period of time in the middle of the night and then fall back asleep, the fitness tracker may not see the additional hours as part of your sleep.
Con Unattractive and bulky design
The tracker is quite wide and hard to miss, it's not something that can blend in with what you're wearing outside of sport/exercise type settings.
Con Short battery life when using the GPS
With the GPS turned on, battery life goes from around 24 days to 9 hours.
This is likely fine for people who will always have opportunities to charge it after their run. However for anyone hoping to use the GPS for longer activities, such as hiking, that may not be long enough to be useful.
Con Flimsy two-prong wrist strap
Fitbit was expected to update their wrist strap with the Charge, but an upgraded buckle can only be purchased with Charge HR.
