Samsung Gear S vs. Sony SmartBand 2 vs. Garmin 645 Music vs. Amazfit T-Rex vs. HTC re Grip

 
Gear S
SmartBand 2
645 Music
T-Rex
re Grip
 SamsungGear SRemove Buy NowSonySmartBand 2Remove Buy NowGarmin645 MusicRemove Buy NowAmazfitT-RexRemove Buy NowHTCre GripRemove Buy Now

Basic Info

Suggested Price$250$130$450$140$199
Release20132015201820192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Durationn/a2 days7 days20 days5 hours to 2.5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution480 x 360n/a240 x 240360 x 360160 x 32
Size2 inchesn/a1.2 inches1.3 inches1.8 inches
Touchn/a
TypeSuper AMOLEDn/aMIPAMOLEDPMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP67IP585 ATM5 ATMIP57

Notifications

Phone
Emails
Texts

Software

Operating SystemTizenn/aBuild-inNA
Apps
Music

All Wearables