Apple Watch Series 2 vs. Fitbit Alta HR vs. Apple Watch Series 4 vs. HTC re Grip vs. Apple SE

 
Watch Series 2
Alta HR
Watch Series 4
re Grip
SE
 AppleWatch Series 2Remove Buy NowFitbitAlta HRRemove Buy NowAppleWatch Series 4Remove Buy NowHTCre GripRemove Buy NowAppleSERemove Buy Now

Basic Info

Suggested Price$269$150$329$199$279
Release20162017201820202020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours7 daysNot Yet5 hours to 2.5 days18 hours
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312128 x 36384 x 480160 x 32384 x 480
Size1.5 inches or 1.65 inches1.4 inches1.78 inches1.8 inches40mm
Touch
TypeAMOLEDOLEDMicroLEDPMOLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet SensorNot yet
Water Resistance5ATMNot YetIP57

Notifications

Phone
Emails
Texts

Software

Operating SystemWatch OSWatch OS 5NAWatchOS 5
Apps
Music

All Wearables