Casio WSD-F20A vs. Samsung Galaxy Watch vs. Fitbit Charge 3 vs. Amazfit T-Rex
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| CasioWSD-F20ARemove Buy Now | SamsungGalaxy WatchRemove Buy Now | FitbitCharge 3Remove Buy Now | AmazfitT-RexRemove Buy Now |
Basic Info | ||||
| Suggested Price | $399 | $330 | $150 | $140 |
| Release | 2018 | 2018 | 2018 | 2019 |
Activity & Fitness | ||||
| Calories | ||||
| Cycling (Bicycling) | ||||
| Distance | ||||
| Heart | ||||
| Oxygen | ||||
| Sleep | ||||
| Steps | ||||
| Swim | ||||
Battery | ||||
| Duration | 1 day | 7 days | 7 days | 20 days |
| Rechargeable | ||||
Compatibility | ||||
| Android | ||||
| iOS | ||||
| Windows Phone | ||||
| Mac | ||||
| Windows | Not yet | |||
Connectivity | ||||
| Bluetooth | ||||
| Cellular | NA | |||
| GPS | ||||
| NFC | NA | |||
| Wi-Fi | ||||
Display | ||||
| Color | ||||
| Resolution | 320 x 320 | 360 x 360 | 66 x 18 | 360 x 360 |
| Size | 1.32 inches | 1.2 inches or 1.3 inches | .721 inches | 1.3 inches |
| Touch | ||||
| Type | LCD | AMOLED | OLED | AMOLED |
Functions | ||||
| Audio Speaker | ||||
| Clock | ||||
| Phone | ||||
| Vibration | ||||
| Voice | ||||
Hardware | ||||
| Accelerometer | ||||
| Barometer or Altimeter | ||||
| Ultraviolet Sensor | ||||
| Water Resistance | 5 ATM | 5 ATM | 5 ATM | 5 ATM |
Notifications | ||||
| Phone | ||||
| Emails | ||||
| Texts | ||||
Software | ||||
| Operating System | Wear OS | Tizen OS | NA | Build-in |
| Apps | ||||
| Music | Spotify | |||