Fitbit Charge 2 vs Charge 4 - Where are the differences?

Brand
Fitbit
Fitbit
Product name
Charge 2
Charge 4
Show all
Only differences
Battery
Loading time
Loading time
2,0 hours
Loading time
2,0 hours
Battery life
Battery life
5 days
Battery life
7 days
Battery life, GPS
Battery life, GPS
-
Battery life, GPS
5,0 hours
Removable
Removable
No
Removable
No
Battery
Battery
Lithium polymer
Battery
Lithium polymer
Bracelet
Changeable
Changeable
No
Changeable
Yes
Display
Always-on-Display
Always-on-Display
No
Always-on-Display
No
Available
Available
Yes
Available
Yes
Colour display
Colour display
No
Colour display
No
Touch
Touch
No
Touch
Yes
Fitbit functions
Fitbit Relax (breathing exercises)
Fitbit Relax (breathing exercises)
No
Fitbit Relax (breathing exercises)
Yes
Measured values
ECG function
ECG function
No
ECG function
No
Floors
Floors
Yes
Floors
Yes
HR measurement
HR measurement
Yes
HR measurement
Yes
HR measurement 24/7
HR measurement 24/7
Yes
HR measurement 24/7
Yes
Sleep
Sleep
Yes
Sleep
Yes
Sleep analysis
Sleep analysis
Yes
Sleep analysis
Yes
Steps
Steps
Yes
Steps
Yes
Smarct functions
Amazon-Alexa integration
Amazon-Alexa integration
No
Amazon-Alexa integration
No
Apps
Apps
No
Apps
No
Clock face changeable
Clock face changeable
No
Clock face changeable
Yes
Notifications (SMS, calls ...)
Notifications (SMS, calls ...)
Yes
Notifications (SMS, calls ...)
Yes
Listen to voice messages
Listen to voice messages
No
Listen to voice messages
No
QuickReplies
QuickReplies
No
QuickReplies
No
QuickReplies, Voice
QuickReplies, Voice
No
QuickReplies, Voice
No
Guided training on the device
Guided training on the device
No
Guided training on the device
No
Swim
Open water
Open water
No
Open water
No
Recording webs
Recording webs
No
Recording webs
Yes
Contactless payment
Available
Available
No
Available
Yes
Provider
Provider
-
Provider
Fitbit Pay
Sensors
Bluetooth Version
Bluetooth Version
4.0
Bluetooth Version
4.0
GALILEO
GALILEO
No
GALILEO
No
GLONASS
GLONASS
No
GLONASS
No
Built-in GPS
Built-in GPS
No
Built-in GPS
Yes
Connected GPS
Connected GPS
Yes
Connected GPS
No
LTE
LTE
No
LTE
No
Pulssensor
Pulssensor
PurePulse
Pulssensor
PurePulse
SpO2
SpO2
No
SpO2
Yes
WLAN
WLAN
No
WLAN
No
Specifications, operability
Operating altitude, max.
Operating altitude, max.
9144 m
Operating altitude, max.
8535 m
Temperature, max.
Temperature, max.
45 °C
Temperature, max.
60 °C
Temperature, min.
Temperature, min.
-10 °C
Temperature, min.
-10 °C
Memory
Internal memory
Internal memory
-
Internal memory
-
Streaming / music
Deezer
Deezer
No
Deezer
No
Spotify
Spotify
No
Spotify
Yes
Waterproof
Waterproof
Waterproof
No
Waterproof
Yes
Up to
Up to
-
Up to
50 m

Where are the differences?

Let's have a closer look by comparing the differences between the two Wearable Charge 2* and Charge 4* made by Fitbit.

Release Date

There are 4 years time between the releases of both products. The Fitbit Charge 2 was released in 2016. Consequently, the Fitbit Charge 4 from 2020 is newer.

Display

You'll get a display with both devices. Here, both Wearable have an integrated color display. the Fitbit Charge 4 The Charge 4 has, in contrast to the Fitbit Charge 2, a touch display. None of the two devices have an always-on display function.

Waterproof

With the Charge 4 you will receive a waterproof device, which puts it in the lead for this comparison. the Charge 4 is not waterproof. The Charge 2 can only be used up to - under water. Here, the Fitbit Charge 4 is waterproof up to 50 m and wins this part of the comparison. The Fitbit Charge 4 even records your swimming lanes.

Battery

The Fitbit Charge 2 has a battery lasting 5 days, which is comparatively less than the Fitbit Charge 4 that lasts 7 days. With GPS running, the battery of the Fitbit Charge 4 is reduced to run for 5,0 hours. Both devices take 2,0 hours to be fully charged.

GPS

Comparing the two Wearable, only the the Fitbit Charge 4 has integrated GPS. the Fitbit Charge 2 offers you the possibility to use Connected GPS. For that, your smartphone's GPS data are used, which means you'll have to carry your phone with you. A drawback to this is the accuracy of your location since your phone's signal can be lost at times.

Heart Rate Monitor

A fitness watch without a heart rate monitor is basically useless and not advisable to buy. That's because your heart rate is one of the key elements of different calculations. For example, many devices without a heart rate monitor claim to count your calories burned too. That number will hardly be right without having access to your heart rate.

Comparing the Fitbit Charge 2 and the Fitbit Charge 4, both devices offer the heart rate monitor function and score in our books. On top of that, both will monitor your heart rate 24/7. Some devices only do that when you press a button, which is practically speaking rather useless.

Measured values

Both devices come with the feature of tracking and recording how many floors you've walked. Generally, this means that the altitude differences get calculated and presented to you. Unfortunately, in many cases these numbers can be rather inaccurate.

Both Wearable offer you the possibility to record your sleep time. On top of that, they also allow you to do a sleep analysis.

Bracelet

Being able to change your fitness watch band is a great advantage. You'll only have to worry about the color of the device itself, and not the color or material of its accompanying watch band. For pretty much every device, you can get cheap watch bands that will fit your device. With the Charge 2 you'll have to live without this advantage, as the watch band is built-in. the Charge 4 on the other hand lets you simply replace the watch band.

Smarct functions

Getting call, text, or other notifications is a feature that both tools have. Often times, this feature is only possible with an Android device. iOS user can be left behind on this. Sending QuickReplies is not an option for either one of the two devices.

the Fitbit Charge 4's interface, or dial, can be manually changed.

Contactless payment

Contactless payment is a highly useful and more in demand than ever technology. Many Wearable already offer it. Being able to do this from your wrist is even more convenient than using your smartphone or a credit card. There's a difference here between the two products, as only the Charge 4 enables you to pay contactless. The Charge 2 works with Fitbit Pay.

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