Fitbit Flex 2 vs. Apple Watch Series 2 vs. Garmin 645 Music vs. Garmin VivoActive 4 vs. HTC re Grip

 
Flex 2
Watch Series 2
645 Music
VivoActive 4
re Grip
 FitbitFlex 2Remove Buy NowAppleWatch Series 2Remove Buy NowGarmin645 MusicRemove Buy NowGarminVivoActive 4Remove Buy NowHTCre GripRemove Buy Now

Basic Info

Suggested Price$100$269$450$349$199
Release20162016201820192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days18 hours7 days8 days5 hours to 2.5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a340 x 272 or 390 x 312240 x 240260 x 260160 x 32
Sizen/a1.5 inches or 1.65 inches1.2 inches1.3ionches1.8 inches
Touchn/a
TypeLEDAMOLEDMIPMIPPMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5ATM5 ATM5 ATMIP57

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWatch OSWear OSNA
Apps
Music

All Wearables