Fitbit Flex 2 vs. Diesel On Full Guard 2.5 vs. Garmin Forerunner 45 vs. Amazfit GTS vs. Apple SE

 
Flex 2
On Full Guard 2.5
Forerunner 45
GTS
SE
 FitbitFlex 2Remove Buy NowDieselOn Full Guard 2.5Remove Buy NowGarminForerunner 45Remove Buy NowAmazfitGTSRemove Buy NowAppleSERemove Buy Now

Basic Info

Suggested Price$100$325$199$150$279
Release20162018201920192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days4 days7 days14 days18 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a454x454208 x 208348 x 442384 x 480
Sizen/a1.39 inches1.04 inches1.65 inches40mm
Touchn/a
TypeLEDLCDAMOLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet SensorNot yet
Water Resistance5 ATM3 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWear OSBuilt-inWear OSWatchOS 5
Apps
Music

All Wearables