Polar Loop 2 vs. Michael Kors Grayson vs. Jawbone UP3 vs. Jawbone UP4 vs. Michael Kors Grayson vs. HTC re Grip

 
Loop 2
Grayson
UP3
UP4
Grayson
re Grip
 PolarLoop 2Remove Buy NowMichael KorsGraysonRemove Buy NowJawboneUP3Remove Buy NowJawboneUP4Remove Buy NowMichael KorsGraysonRemove Buy NowHTCre GripRemove Buy Now

Basic Info

Suggested Price$120$350$180$200$350$199
Release201520182013201520182020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heartn/a
Oxygen
Sleep
Steps
Swim

Battery

Duration8 days (without notifications)24 hours7 daysNA24 hours5 hours to 2.5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNANANA
Macn/aNANANA
Windowsn/aNANANA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a453 x 454NANA453x454160 x 32
Sizen/a1.39 inchesNANA1.39 inches1.8 inches
TouchNANA
TypeLEDAMOLEDNANAAMOLEDPMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance2 ATM1 ATMNANA1 ATMIP57

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid WearNANAAndroid WearNA
Apps
MusicNANA

All Wearables