When comparing Fitbit Surge vs Fitbit Charge 2, the Slant community recommends Fitbit Charge 2 for most people. In the question“What are the best fitness trackers that pair with iPhones?” Fitbit Charge 2 is ranked 1st while Fitbit Surge is ranked 18th. The most important reason people chose Fitbit Charge 2 is:
It gives you a lot of stats on your activities thanks to the GPS, altimeter, and heart rate monitor. It can track your sleep, show you alerts directly on the display, and offers a variety of helpful features such as reminders to move and a breathing function that helps you relax.
Specs
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Pros
Pro Continuous heart rate tracking eliminates risk of forgetting to activate the feature
The Fitbit Surge fitness tracker has automatic, continuous, wrist based heart rate tracking. Heart rate data is stored at one second intervals during exercise, and at five second intervals during non-exercise activities.
Pro LCD screen that can display multiple stats without the need of using the app
Similar fitness trackers depend on Bluetooth in order to relay info to a smartphone. Fitbit Surge can display information locally on the display which is far more convenient.

Pro Lets users log meals by voice
Users can tell Surge what was eaten, and a database will be used to match the entry with nutritional information.
Pro Does not need to be recharged frequently
The battery lasts 5-7 days which is one of the longer lasting options for rechargeable fitness trackers.

Pro Easy to operate compared to display-less options
While Surge easily syncs with iOS, Android, and Windows phones, it does not depend on them for functionality. The touch screen and physical buttons are a huge step up from display-less models.
Pro Gives you a lot of features for the price
It gives you a lot of stats on your activities thanks to the GPS, altimeter, and heart rate monitor. It can track your sleep, show you alerts directly on the display, and offers a variety of helpful features such as reminders to move and a breathing function that helps you relax.
Pro Reminds you to move throughout the day
The fitness tracker will give you hourly reminders to get up and move for a few minutes, so you're not spending your whole day hunched over a desk.
Pro Great choice of replacement bands
Including regular vinyl bands, leather, metal, luxury, etc.
Pro The large display is easy to read
The Charge 2 has a very clear black and white display that's easy to read in both light and dark settings. It gives you a lot of activity stats directly on the display, which keeps you from needing to frequently check the smartphone app.
Pro Only needs to be charged every 4-5 days
Compared to other fitness trackers with large display screens, and Charge 2 has an impressive battery life. It can go 4-5 days without needing to be recharged, so there is minimal interruption to your tracking.
Pro Great ecosystem
Lots of users, nice apps (Win10 UWP app as well), etc.
Cons
Con Might cause skin irritation for some
A number of people are reporting the Surge causes skin irritation. According to the company it's a very small percentage of customers.
Con Screen prone to inadvertent touches
It's really easy to accidentally brush up against the fitness tracker's watch and end up on screens that the user wasn't intending to navigate to. This forces you to swipe back to the correct screen.
Con Fairly big investment
While it's one of the most advanced trackers that Fitbit offers, it comes with a hefty price tag.
Con Weak vibration causes alerts to easily go missed
The Charge 2 has a very weak vibration that is easy to miss, especially when you're active. As a result, it's easy to miss silent alarms or reminders to get up and move.
Con No smart alarm
Although the feature has been requested by the community since 2014.
Con No actionable notifications / call and text only
You can only see call and text notifications, no Facebook, Twitter, email, etc. And you can only see them, you cannot reply, delete, dismiss, etc.
Con App is not intuitive and terrible on Android
It is clunky and annoying, but works part time. There's a report on another Android that it just doesn't work. No alerts for 250 steps per hour. Not accurate. Clunky non intuitive functionality.
Con No water resistance
It is not water proof or even water-resistant. The watch will still function if you get a little splash of water on it, but you definitely can’t take it if you go swimming,
Con Lower quality screen that scratches easily
Rather than gorilla glass which is commonly used in the more expensive trackers, the Charge 2 fitness tracker uses a thick plastic display screen. It makes the device appear lower quality and scratches very easily.
Con Lavender band turns blue after a short period of wear
The specific color of band can start to turn blue after only the first day of wear. It very quickly looks stained and dirty.
