Basic Info |
| Suggested Price | $350 | $269 | $249 | $299 | $429 |
| Release | 2016 | 2016 | 2017 | 2017 | 2021 |
Activity & Fitness |
| Calories | n/a | | | | |
| Cycling (Bicycling) | n/a | | | | |
| Distance | n/a | | | | |
| Heart | n/a | | | | |
| Oxygen | n/a | | | | |
| Sleep | n/a | | | | |
| Steps | n/a | | | | |
| Swim | n/a | | | | |
Battery |
| Duration | n/a | 18 hours | | 24 hours (5 hrs w GPS and heart rate) | 18 Hours |
| Rechargeable | n/a | | | | |
Compatibility |
| Android | | | | | |
| iOS | | | | | |
| Windows Phone | n/a | | | | |
| Mac | n/a | | | | |
| Windows | n/a | | | | |
Connectivity |
| Bluetooth | | | | | |
| Cellular | n/a | | | | |
| GPS | n/a | | | | |
| NFC | n/a | | | | |
| Wi-Fi | | | | | |
Display |
| Color | | | | | |
| Resolution | 320 x 290 | 340 x 272 or 390 x 312 | 360 x 360 | 400 x 400 | 396 x 484 |
| Size | n/a | 1.5 inches or 1.65 inches | 1.2 inches | 1.39 inches | 1.9 inches |
| Touch | n/a | | | | |
| Type | n/a | AMOLED | P-OLED | AMOLED | MicroLED |
Functions |
| Audio Speaker | n/a | | | | |
| Clock | | | | | |
| Phone | n/a | | | | |
| Vibration | n/a | | | | |
| Voice | n/a | | | | |
Hardware |
| Accelerometer | n/a | | | | |
| Barometer or Altimeter | n/a | | | | |
| Ultraviolet Sensor | n/a | | | | |
| Water Resistance | 1 ATM | 5ATM | IP67 | 5 ATM | water resistant but not waterproof |
Notifications |
| Phone | n/a | | | | |
| Emails | n/a | | | | |
| Texts | n/a | | | | |
Software |
| Operating System | n/a | Watch OS | Android Wear 2 | Android Wear 1.5 | WatchOS 8 |
| Apps | n/a | | | | |
| Music | n/a | | | | |
