Garmin 645 Music vs. Garmin Chronos vs. Fitbit Alta HR vs. Garmin Forerunner 45 vs. Apple Watch 7
 | | | | | |
| Garmin645 MusicRemove Buy Now | GarminChronosRemove Buy Now | FitbitAlta HRRemove Buy Now | GarminForerunner 45Remove Buy Now | AppleWatch 7Remove Buy Now |
Basic Info | |||||
| Suggested Price | $450 | $1500 | $150 | $199 | $429 |
| Release | 2018 | 2018 | 2017 | 2019 | 2021 |
Activity & Fitness | |||||
| Calories | |||||
| Cycling (Bicycling) | |||||
| Distance | |||||
| Heart | |||||
| Oxygen | |||||
| Sleep | |||||
| Steps | |||||
| Swim | |||||
Battery | |||||
| Duration | 7 days | 8 days | 7 days | 7 days | 18 Hours |
| Rechargeable | |||||
Compatibility | |||||
| Android | |||||
| iOS | |||||
| Windows Phone | |||||
| Mac | |||||
| Windows | |||||
Connectivity | |||||
| Bluetooth | |||||
| Cellular | |||||
| GPS | |||||
| NFC | |||||
| Wi-Fi | |||||
Display | |||||
| Color | |||||
| Resolution | 240 x 240 | 218 x 218 | 128 x 36 | 208 x 208 | 396 x 484 |
| Size | 1.2 inches | 1.2 inches | 1.4 inches | 1.04 inches | 1.9 inches |
| Touch | |||||
| Type | MIP | MIP | OLED | LCD | MicroLED |
Functions | |||||
| Audio Speaker | |||||
| Clock | |||||
| Phone | |||||
| Vibration | |||||
| Voice | |||||
Hardware | |||||
| Accelerometer | |||||
| Barometer or Altimeter | |||||
| Ultraviolet Sensor | |||||
| Water Resistance | 5 ATM | 10 ATM | 5 ATM | water resistant but not waterproof | |
Notifications | |||||
| Phone | |||||
| Emails | |||||
| Texts | |||||
Software | |||||
| Operating System | Wear OS | Built-in | WatchOS 8 | ||
| Apps | |||||
| Music | |||||