Withings Activite Sapphire vs. Fitbit Alta vs. Fitbit Flex 2 vs. Amazfit Stratos vs. Asus VivoWatch

 
Activite Sapphire
Alta
Flex 2
Stratos
VivoWatch
 WithingsActivite SapphireRemove Buy NowFitbitAltaRemove Buy NowFitbitFlex 2Remove Buy NowAmazfitStratosRemove Buy NowAsusVivoWatchRemove Buy Now

Basic Info

Suggested Price$450$130$100$199$160
Release20142016201620182018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration8 months5 days5 days5 days24 hours to 10 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/an/a320 x 300128 x 128
Size1.3 inchesn/an/a1.34 inchesNA
Touchn/an/a
TypeAnalogOLEDLEDOLEDNA

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or AltimeterNA
Ultraviolet Sensor
Water Resistance5 ATMn/a5 ATM5 ATMIP67

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/an/an/aProprietaryKoodOS
Apps
Music

All Wearables