Polar Loop 2 vs. Apple Watch Series 2 vs. Polar A370 vs. Diesel On Full Guard 2.5 vs. HTC re Grip

 
Loop 2
Watch Series 2
A370
On Full Guard 2.5
re Grip
 PolarLoop 2Remove Buy NowAppleWatch Series 2Remove Buy NowPolarA370Remove Buy NowDieselOn Full Guard 2.5Remove Buy NowHTCre GripRemove Buy Now

Basic Info

Suggested Price$120$269$179.95$325$199
Release20152016201720182020

Activity & Fitness

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

Battery

Duration8 days (without notifications)18 hoursUp to 3 days4 days5 hours to 2.5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a340 x 272 or 390 x 312160 x 80454x454160 x 32
Sizen/a1.5 inches or 1.65 inches1.18 inches1.39 inches1.8 inches
Touch
TypeLEDAMOLEDTFT LCDPMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance2 ATM5ATMWR303 ATMIP57

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWatch OSWear OSNA
Apps
Music

All Wearables