Pebble Time Round vs. Withings Activite Sapphire vs. Withings Activite Steel vs. Amazfit T-Rex

 
Time Round
Activite Sapphire
Activite Steel
T-Rex
 PebbleTime RoundRemove Buy NowWithingsActivite SapphireRemove Buy NowWithingsActivite SteelRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$200$450$170$140
Release2015201420152019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days8 months8 months20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/an/a360 x 360
Sizeround1.3 inches1.3 inches1.3 inches
Touch
Typee-paperAnalogAnalogAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX75 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemPebble OSn/an/aBuild-in
Apps
Music

All Wearables