Fitbit Flex 2 vs. Fitbit One vs. Fitbit Ionic vs. Mobvoi TicWatch S vs. Amazfit T-Rex

 
Flex 2
One
Ionic
TicWatch S
T-Rex
 FitbitFlex 2Remove Buy NowFitbitOneRemove Buy NowFitbitIonicRemove Buy NowMobvoiTicWatch SRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$100$100$299$199$140
Release20162012201720172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days10-14 days4+ days1.5-2 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/a348x250400 x 400360 x 360
Sizen/an/a1.421.4 inches1.3 inches
Touchn/a
TypeLEDOLEDOLEDOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMSplast Resistant50mIP675 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aFitbit OSAndroid Wear 2.0Build-in
Apps
Music

All Wearables