Compare Casio WSD-F21 HR vs Garmin Fenix 5x Plus vs Samsung Galaxy Watch

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In this comparison, we compare the Casio WSD-F21 HR vs Garmin Fenix 5x Plus vs Samsung Galaxy Watch – three outstanding smartwatches and some of the best on the market.

The WSD-F21 HR is the first Casio smartwatch with a heart rate sensor and also an outstanding GPS smartwatch. So also is the Fenix 5x plus that’s undoubtedly one of the best GPS smartwatches. While the Galaxy Watch is a standalone smartwatch, also a comprehensive activity tracker and one of the most popular among smartwatch lovers.
We compare the specs and features of these three so you know the differences.

Casio WSD-F21 HR vs Garmin Fenix 5x Plus vs Samsung Galaxy Watch Specs Compared

 Casio Pro Trek WSD-F21 HRGarmin Fenix 5X PlusSamsung Galaxy Watch
casio pro trek WSD-F21 HR specsgarmin 5x plus specsSamsung Galaxy Watch Active 2 vs Galaxy Watch vs Gear S3


4.4 out of 5 stars (4.4 / 5)
3.7 out of 5 stars (3.7 / 5)
Fitness tracking:
4.4 out of 5 stars (4.4 / 5)
4.4 out of 5 stars (4.4 / 5)
2.5 out of 5 stars (2.5 / 5)
3.9 out of 5 stars (3.9 / 5)
4.5 out of 5 stars (4.5 / 5)
4.4 out of 5 stars (4.4 / 5)
Fitness tracking:
4.7 out of 5 stars (4.7 / 5)
4.5 out of 5 stars (4.5 / 5)
3.2 out of 5 stars (3.2 / 5)
4.3 out of 5 stars (4.3 / 5)
4.5 out of 5 stars (4.5 / 5)
3.5 out of 5 stars (3.5 / 5)
Fitness tracking:
4.5 out of 5 stars (4.5 / 5)
4.5 out of 5 stars (4.5 / 5)
4 out of 5 stars (4.0 / 5)
4.2 out of 5 stars (4.2 / 5)


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Device nameCasio Pro Trek WSD-F21 HRGarmin Fenix 5X PlusSamsung Galaxy Watch
Device typeFitness/GPS smartwatchFitness/GPS/Classic smartwatchClassic/Fitness/Standalone smartwatch
PredessesorCasio Pro Trek WSD-F20Garmin Fenix 5XSamsung Gear S3
Successor_Garmin Fenix 6X Pro--
Released dateAugust, 2019June, 2018August, 2018
Ideal forMenMenMen (46mm)
Women (42mm)


Display typeDual display;
Monochrome LCD
Colored TFT LCD
Transflective memory-in-display (MIP)Super AMOLED
Full color
Display size1.32 inches1.2 inch1.3 inch (46mm)
1.2 inch (42mm)
Display resolution300 x 320 pixel240 x 240 pixels360 x 360 pixels
Pixel density__--278 ppi
Input typeTouchscreen
3 Physical buttons
5 buttons (not touchscreen)Touchscreen,
2 physical buttons
physical rotating bezel


Dimension61.7 × 57.7 × 16.8 mm51 x 51 x 17.5 mm41.9 x 45.7 x 12.7 mm (42mm)
46 x 49 x 13 mm (46mm)
Weight81 (Including straps)96 g
Titanium: 87 g
63 grams (46mm)
49 grams (42mm)
Casing materialResinFiber-reinforced polymer with polymer rear coverStainless steel/glass reinforced with polycarbonate
Strap/band materialUrethaneSilicone
(leather straps also available)
Bezel MaterialResinStainless steel
or Titanium
Strap size26mm26mm22 mm (46mm)
20 mm (42mm)
Screen protectionAnti-fouling coating glassDomed sapphire crystalCorning Gorilla glass DX+
Water resistant/ProtectionYes, 5ATM (MIL-STD-810G)Yes, 10ATMYes, IP68, 5ATM
Swim-proofYes, recommendedYes, recommendedYes, recommended
Black, silver, rose-gold


RAM0.5GB--1.5GB (LTE),
0.75GB (non-LTE)
Internal storage4GB16GB4GB
Memory card slotNoNoNo


BluetoothBluetooth v4.1 LEYes, and ANT+ Bluetooth v4.2
Bluetooth callingNoNoYes


BandNoNoGSM 850/900/1800
WCDMA B1/2/5


Email alertYesYesYes
SMS alertYesYesYes
Calls alertYesYesYes
Event reminderYesYesYes
Third-party appsYesYesYes


Sleep apneaNoNoNo
Sleep trackingYesYesYes
Floors climbedYesYesYes
Heart rate monitoringYesYesYes
VO2 Max.YesYesYes
Blood oxygenNoYesNo
Blood pressureNoNoNo
Menstrual cycle trackingNoYesNo
Swim trackingYesYesYes
Under-water heart rate trackingNoNoNo
Preloaded mapsYesYesYes
On-screen workout modesNoNoNo
Triathlon mode_YesYes
ECG TrackingNoNoNo
Preloaded sport modesYesYesYes
Safety trackingNoYesNo


Music streamingYesYesYes
Bluetooth musicYesYesYes


Heart rate monitor (HRM)YesYesYes
Gyroscope YesYesYes
Ambient lightYesYesYes
Pulse Ox.NoYesNo
Other sensors------


Operating system (OS)Wear OSProprietary OSTizen OS 4.0
ChipsetSnapdragon 2100--Exynos 9110
CPU__--Dual core 1.15GHz


Type of batteryNon-removable Li-ion batteryNon-removable Li-ion batteryNon-removable Li-ion battery
Battery capacity __--472mAh (46mm)
270mAh (42mm)
Battery lifeMixed usage: 1 day+ (TFT LCD)
1 month+ (Monochrome LCD)
GPS tracking: Up to 25 hrs
Smartwatch: Up to 20 days
GPS: Up to 32 hours
GPS and Music: Up to 13 hours
UltraTrac™ mode: Up to 70 hours
Standby :5 days+,
Mixed usage: 2 days+
Charging typeCharging cableUSB charging cableWPC based wireless charging
Charging timeAbout 1-2 hoursAbout 1-2 hoursAbout 1-2 hours
Battery saver modeYesYesYes
Solar powerNoNoNo
Rapid chargingNoNo_




Control camera_YesYes
Music controlYesYesYes
Find phoneYesYesYes
Text response_YesYes


Payment systemNoNoSamsung pay
Compatibility Android 4.4+ (excluding Go edition)
iOS 9.3+ Check if your device is compatible
Check if your device is compatible
Android and iOS
Check if your device is compatible
Android 5.0+ & RAM 1.5GB+
iPhone 5+ and iOS 9.0+
Companion app_Garmin connect IQ storeSamsung Gear app
Customizable watch faceYesYesYes
Interchangeable band Yes, 26mmYes, 26mmYes, 22mm/20mm
Voice commandYes, Google AssistantNoYes


Casio Pro Trek WSD-F21 HRGarmin Fenix 5X PlusSamsung Galaxy Watch
StrapsStrapsSmall and large straps
Charging cableUSB charging cableWireless charger
Quick start guideQuick start guideQuick start guide
NOTE: We can't guarantee that all the information on this table are 100% correct. Read full disclaimer. Please, report an error.
Official SiteOfficial Site

Casio WSD-F21 HR vs Garmin Fenix 5x Plus vs Samsung Galaxy Watch Features Compared

  1. Design

  2. Each one of these three has got a remarkable design that’s outstanding and stylish too. Although, the Galaxy watch is a more compact and slimmer device compared to the Fenix 5X plus and F21 HR. In other words, the Galaxy watch has the most stylish design that’s sleeker and elegant.

    The Fenix 5x plus has a slightly smaller case size than the F21 HR, but the later is slightly slimmer than the former. Although these two are quite thick and not the best fit for women or people with smaller wrists.

    The Fenix 5X plus actually has a stronger domed sapphire glass which makes it a more durable device compared to the Corning Gorilla Glass DX+ of the Galaxy watch which is also a very strong and durable material, and even stronger than the anti-fouling coating glass of the F21 HR.

    The Galaxy Watch with touchscreen support and two physical buttons including the iconic rotating bezel makes it quite very easier to navigate compared to the F21 HR and the Fenix 5X plus which lacks touchscreen support.

  3. Casio WSD-F21 HR vs Garmin Fenix 5x Plus vs Samsung Galaxy Watch: Storage/Media

  4. The Fenix 5X plus being a high-end smartwatch has the highest storage capacity which allows you to take more music with you on the go unlike the F21 HR and Galaxy watch which both have a somewhat low 4GB storage capacity.

    The Galaxy Watch is a standalone smartwatch that has a loudspeaker and a microphone that allows you to play media files anywhere as well as accessing Bixby via the microphone. The F21 HR also has a microphone that allows you access to the much improved Google Assistant which comes handy in helping perform quite a lot of tasks but lacks a loudspeaker. The Fenix 5X Plus has neither a microphone nor a loudspeaker.

  5. Fitness Tracking

  6. Each of these three being a fitness-focused smartwatch is well equipped with the needed sensor for a comprehensive fitness tracking. Each of these can track your daily activities such as indoor and outdoor training activities including calories and sleep tracking.

    Although, the Galaxy Watch is a comprehensive fitness tracker that features 39 sport modes as well as being able to auto-track 6 of these. On the other hand, Fenix 5X plus is quite a more comprehensive fitness tracker with a lot of tracking features that makes it a better choice for pro athletes.

    The Fenix 5X Plus features running analysis features, stress management, VO2 max, blood oxygen level tracking and much more. And being a GPS smartwatch just like the F21 HR comes with barometric altimeter that certainly makes these two great choices for the great outdoors.

  7. Water Resistance Rating

  8. The Fenix 5X plus having the highest water resistance rating of 10ATM that means water resistant up to 100 meters is better choice for deep water activities compared to the Galaxy watch and F21 HR with 5ATM rating respectively.

    The Galaxy Watch and F21 HR have also received the MIL-STD-810G – a US military-grade rating that makes these two more rugged devices that can withstand shocks.

  9. Cellular Connectivity

  10. The Galaxy watch being a standalone device comes with cellular connectivity support, which the F21 HR and Fenix 5X plus lacks this feature. Thus, the Galaxy watch allows you make and receive calls directly from the watch.

  11. Battery Life

Each of these three has got a quite impressive battery life that will see you through the day or more. Although, the Fenix 5X plus has the most impressive battery life that’ll see you go long for days on a single charge.

The smartwatch mode of the Fenix 5X plus will keep you going for over two weeks compared to the Galaxy watch with about 2-4 days and the F21 HR with about 1-2 days long battery life. Although, the F20i with dual display mode including the monochromic display that will see it last just about a month. However, when the monochromic display is activated, all Wear OS features become inactive.

Which is the Best?

From all observations, these are three outstanding smartwatches with sophisticated design and features that define a premium smartwatch.

The Galaxy watch being a standalone smartwatch is a more comprehensive smartwatch, and being quite cheaper than the other two is a great choice for anyone looking for a smartwatch that does it all. It also has the most stylish design that makes it more comfortable to wear for both men and women with respect to the two available sizes.

On the other hand, the Garmin Fenix 5X Plus featuring premium materials although quite expensive is a better GPS smartwatch than the F21 HR. It has more fitness tracking features that make it the most comprehensive fitness tracker out of these three. It has also the longest battery life that’ll keep you going longer from a single charge, while not forgetting it has an NFC chip powering Garmin pay which the F21 HR lacks.

The Casio WSD-F21 HR is a nice alternative to the Fenix 5X Plus, it’s the first in the Protrek series with the heart rate monitoring functionality. It’s also an outstanding GPS smartwatch and a comprehensive fitness tracker that can improve your fitness level.

Here’s how they stack up;

SAMSUNG GALAXY WATCH ACTIVE 2 A premium smartwatch and the most comprehensive with more features.
GARMIN FENIX 5X PLUS A premium GPS smartwatch and the most comprehensive fitness tracker with the longest battery life.
CASIO PROTREK WSD-F21 HR An outstanding GPS smartwatch and a nice alternative.

Our Pick

The Galaxy watch is quite cheaper despite being a more comprehensive smartwatch with more features and remarkable design that leaves it with the most outstanding and stylish appearance. It’s our preferred choice.

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