Fitbit Flex 2 vs. Apple Watch Series 2 vs. Fitbit Ionic vs. Amazfit Stratos vs. Acer Liquid Leap

 
Flex 2
Watch Series 2
Ionic
Stratos
Liquid Leap
 FitbitFlex 2Remove Buy NowAppleWatch Series 2Remove Buy NowFitbitIonicRemove Buy NowAmazfitStratosRemove Buy NowAcerLiquid LeapRemove Buy Now

Basic Info

Suggested Price$100$269$299$199$90
Release20162016201720182015

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days18 hours4+ days5 days5 to 7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a340 x 272 or 390 x 312348x250320 x 300128 x 32
Sizen/a1.5 inches or 1.65 inches1.421.34 inches1 inch
Touchn/a
TypeLEDAMOLEDOLEDOLEDOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5ATM50m5 ATMIPX4

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWatch OSFitbit OSProprietary
Apps
Music

All Wearables