Garmin 645 Music vs. Fitbit Charge 3 vs. Amazfit GTS vs. Apple Watch Ultra vs. Fitbit Sense 2
 | | | | | |
| Garmin645 MusicRemove Buy Now | FitbitCharge 3Remove Buy Now | AmazfitGTSRemove Buy Now | AppleWatch UltraRemove Buy Now | FitbitSense 2Remove Buy Now |
Basic Info | |||||
| Suggested Price | $450 | $150 | $150 | $799 | $300 |
| Release | 2018 | 2018 | 2019 | 2022 | 2022 |
Activity & Fitness | |||||
| Calories | |||||
| Cycling (Bicycling) | |||||
| Distance | |||||
| Heart | |||||
| Oxygen | |||||
| Sleep | |||||
| Steps | |||||
| Swim | |||||
Battery | |||||
| Duration | 7 days | 7 days | 14 days | 36 hrs | 6 days |
| Rechargeable | |||||
Compatibility | |||||
| Android | |||||
| iOS | |||||
| Windows Phone | |||||
| Mac | |||||
| Windows | Not yet | ||||
Connectivity | |||||
| Bluetooth | |||||
| Cellular | |||||
| GPS | |||||
| NFC | NA | ||||
| Wi-Fi | |||||
Display | |||||
| Color | |||||
| Resolution | 240 x 240 | 66 x 18 | 348 x 442 | 502x410 pixels | 336x336 |
| Size | 1.2 inches | .721 inches | 1.65 inches | 1.92 inches | 1.59 inches |
| Touch | |||||
| Type | MIP | OLED | AMOLED | AMOLED | |
Functions | |||||
| Audio Speaker | |||||
| Clock | LTPO OLED Retina | ||||
| Phone | |||||
| Vibration | |||||
| Voice | |||||
Hardware | |||||
| Accelerometer | |||||
| Barometer or Altimeter | |||||
| Ultraviolet Sensor | |||||
| Water Resistance | 5 ATM | 5 ATM | 5 ATM | 10 ATM (100 Meters) | 5 ATM |
Notifications | |||||
| Phone | |||||
| Emails | |||||
| Texts | |||||
Software | |||||
| Operating System | NA | Wear OS | WatchOS 9 | ||
| Apps | |||||
| Music | |||||