Pebble Time Round vs. Fitbit Alta vs. Fitbit Flex vs. Apple Watch Ultra vs. Fitbit Sense 2

 
Time Round
Alta
Flex
Watch Ultra
Sense 2
 PebbleTime RoundRemove Buy NowFitbitAltaRemove Buy NowFitbitFlexRemove Buy NowAppleWatch UltraRemove Buy NowFitbitSense 2Remove Buy Now

Basic Info

Suggested Price$200$130$100$799$300
Release20152016201320222022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days5 days5 days36 hrs6 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/aNA502x410 pixels336x336
Sizeroundn/aNA1.92 inches1.59 inches
Touchn/aNA
Typee-paperOLEDLEDAMOLED

Functions

Audio Speaker
ClockLTPO OLED Retina
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX7n/a1 ATM10 ATM (100 Meters)5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating SystemPebble OSn/aNAWatchOS 9
Apps
Music

All Wearables