Basic Info |
| Suggested Price | $150 | $120 | $349 | $429 | $279 |
| Release | 2015 | 2015 | 2015 | 2021 | 2020 |
Activity & Fitness |
| Calories | | | | | |
| Cycling (Bicycling) | | | | | |
| Distance | | | | | |
| Heart | | n/a | | | |
| Oxygen | | | | | |
| Sleep | | | | | |
| Steps | | | | | |
| Swim | | | | | |
Battery |
| Duration | 8 months | 8 days (without notifications) | 18 hours | 18 Hours | 18 hours |
| Rechargeable | | | | | |
Compatibility |
| Android | | | | | |
| iOS | | | | | |
| Windows Phone | n/a | n/a | NA | | |
| Mac | n/a | n/a | NA | | |
| Windows | n/a | n/a | NA | | |
Connectivity |
| Bluetooth | | | | | |
| Cellular | | | | | |
| GPS | | | | | |
| NFC | | | | | |
| Wi-Fi | | | | | |
Display |
| Color | | | | | |
| Resolution | n/a | n/a | 340 x 272 or 390 x 312 | 396 x 484 | 384 x 480 |
| Size | 1.3 inches | n/a | 1.5 inches or 1.65 inches | 1.9 inches | 40mm |
| Touch | | | | | |
| Type | Analog | LED | AMOLED | MicroLED | MicroLED |
Functions |
| Audio Speaker | | | | | |
| Clock | | | | | |
| Phone | | | | | |
| Vibration | | | | | |
| Voice | | | | | |
Hardware |
| Accelerometer | | | | | |
| Barometer or Altimeter | | | | | |
| Ultraviolet Sensor | | | | | Not yet |
| Water Resistance | 5 ATM | 2 ATM | IPX7 | water resistant but not waterproof | |
Notifications |
| Phone | | | | | |
| Emails | | | | | |
| Texts | | | | | |
Software |
| Operating System | n/a | n/a | Watch OS | WatchOS 8 | WatchOS 5 |
| Apps | | | | | |
| Music | | | | | |
