Casio WSD-F20A vs. Fitbit Alta HR vs. Amazfit GTR vs. Apple Watch Ultra
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| CasioWSD-F20ARemove Buy Now | FitbitAlta HRRemove Buy Now | AmazfitGTRRemove Buy Now | AppleWatch UltraRemove Buy Now |
Basic Info | ||||
| Suggested Price | $399 | $150 | $199 | $799 |
| Release | 2018 | 2017 | 2019 | 2022 |
Activity & Fitness | ||||
| Calories | ||||
| Cycling (Bicycling) | ||||
| Distance | ||||
| Heart | ||||
| Oxygen | ||||
| Sleep | ||||
| Steps | ||||
| Swim | ||||
Battery | ||||
| Duration | 1 day | 7 days | 24 days | 36 hrs |
| Rechargeable | ||||
Compatibility | ||||
| Android | ||||
| iOS | ||||
| Windows Phone | ||||
| Mac | ||||
| Windows | ||||
Connectivity | ||||
| Bluetooth | ||||
| Cellular | ||||
| GPS | ||||
| NFC | ||||
| Wi-Fi | ||||
Display | ||||
| Color | ||||
| Resolution | 320 x 320 | 128 x 36 | 454 x 454 | 502x410 pixels |
| Size | 1.32 inches | 1.4 inches | 1.39 inches | 1.92 inches |
| Touch | ||||
| Type | LCD | OLED | AMOLED | |
Functions | ||||
| Audio Speaker | ||||
| Clock | LTPO OLED Retina | |||
| Phone | ||||
| Vibration | ||||
| Voice | ||||
Hardware | ||||
| Accelerometer | ||||
| Barometer or Altimeter | ||||
| Ultraviolet Sensor | ||||
| Water Resistance | 5 ATM | 5 ATM | 10 ATM (100 Meters) | |
Notifications | ||||
| Phone | ||||
| Emails | ||||
| Texts | ||||
Software | ||||
| Operating System | Wear OS | Build-in | WatchOS 9 | |
| Apps | ||||
| Music | ||||