Garmin 645 Music vs. Garmin Forerunner 235 vs. Amazfit GTS vs. Garmin VivoActive 4 vs. HTC re Grip

 
645 Music
Forerunner 235
GTS
VivoActive 4
re Grip
 Garmin645 MusicRemove Buy NowGarminForerunner 235Remove Buy NowAmazfitGTSRemove Buy NowGarminVivoActive 4Remove Buy NowHTCre GripRemove Buy Now

Basic Info

Suggested Price$450$299.99$150$349$199
Release20182017201920192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration7 days9 days14 days8 days5 hours to 2.5 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240215 x 180348 x 442260 x 260160 x 32
Size1.2 inches1.23 inches1.65 inches1.3ionches1.8 inches
Touch
TypeMIPMIPAMOLEDMIPPMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM5 ATM5 ATMIP57

Notifications

Phone
Emails
Texts

Software

Operating SystemWear OSWear OSNA
Apps
Music

All Wearables