Pebble Time Round vs. Samsung Gear 2 vs. Polar A370 vs. Diesel On Full Guard 2.5 vs. Amazfit T-Rex

 
Time Round
Gear 2
A370
On Full Guard 2.5
T-Rex
 PebbleTime RoundRemove Buy NowSamsungGear 2Remove Buy NowPolarA370Remove Buy NowDieselOn Full Guard 2.5Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$200$300$179.95$325$140
Release20152014201720182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
StepsNA
Swim

Battery

Duration2 days2-3 daysUp to 3 days4 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Macn/aNA
Windowsn/aNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a320 x 320160 x 80454x454360 x 360
Sizeround1.63 inches1.18 inches1.39 inches1.3 inches
Touch
Typee-paperSuper AMOLEDTFT LCDAMOLED

Functions

Audio SpeakerBluetooth
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX7IP67WR303 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemPebble OSTizen OSWear OSBuild-in
Apps
Music

All Wearables