Fitbit Flex 2 vs. Amazfit Stratos vs. Fitbit Alta HR vs. Polar A370 vs. Mobvoi TicWatch S2

 
Flex 2
Stratos
Alta HR
A370
TicWatch S2
 FitbitFlex 2Remove Buy NowAmazfitStratosRemove Buy NowFitbitAlta HRRemove Buy NowPolarA370Remove Buy NowMobvoiTicWatch S2Remove Buy Now

Basic Info

Suggested Price$100$199$150$179.95$180
Release20162018201720172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days7 daysUp to 3 days2 DAYS
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a320 x 300128 x 36160 x 80400 x 400
Sizen/a1.34 inches1.4 inches1.18 inches1.39 inches
Touchn/a
TypeLEDOLEDOLEDTFT LCDOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATMWR305 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aProprietaryWear OS
Apps
Music

All Wearables