Garmin 645 Music vs. Fitbit Flex vs. Apple Watch Series 4 vs. Garmin Forerunner 45 vs. Garmin VivoActive 4
 | | | | | |
| Garmin645 MusicRemove Buy Now | FitbitFlexRemove Buy Now | AppleWatch Series 4Remove Buy Now | GarminForerunner 45Remove Buy Now | GarminVivoActive 4Remove Buy Now |
Basic Info | |||||
| Suggested Price | $450 | $100 | $329 | $199 | $349 |
| Release | 2018 | 2013 | 2018 | 2019 | 2019 |
Activity & Fitness | |||||
| Calories | |||||
| Cycling (Bicycling) | |||||
| Distance | |||||
| Heart | |||||
| Oxygen | |||||
| Sleep | |||||
| Steps | |||||
| Swim | |||||
Battery | |||||
| Duration | 7 days | 5 days | Not Yet | 7 days | 8 days |
| Rechargeable | |||||
Compatibility | |||||
| Android | |||||
| iOS | |||||
| Windows Phone | NA | ||||
| Mac | |||||
| Windows | |||||
Connectivity | |||||
| Bluetooth | |||||
| Cellular | |||||
| GPS | |||||
| NFC | |||||
| Wi-Fi | |||||
Display | |||||
| Color | |||||
| Resolution | 240 x 240 | NA | 384 x 480 | 208 x 208 | 260 x 260 |
| Size | 1.2 inches | NA | 1.78 inches | 1.04 inches | 1.3ionches |
| Touch | NA | ||||
| Type | MIP | LED | MicroLED | LCD | MIP |
Functions | |||||
| Audio Speaker | |||||
| Clock | |||||
| Phone | |||||
| Vibration | |||||
| Voice | |||||
Hardware | |||||
| Accelerometer | |||||
| Barometer or Altimeter | |||||
| Ultraviolet Sensor | |||||
| Water Resistance | 5 ATM | 1 ATM | Not Yet | 5 ATM | 5 ATM |
Notifications | |||||
| Phone | |||||
| Emails | |||||
| Texts | |||||
Software | |||||
| Operating System | NA | Watch OS 5 | Built-in | Wear OS | |
| Apps | |||||
| Music | |||||