Casio WSD-F20A vs. Fitbit Alta HR vs. Apple Watch Series 4 vs. Amazfit GTS vs. Apple Watch Ultra
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| CasioWSD-F20ARemove Buy Now | FitbitAlta HRRemove Buy Now | AppleWatch Series 4Remove Buy Now | AmazfitGTSRemove Buy Now | AppleWatch UltraRemove Buy Now |
Basic Info | |||||
| Suggested Price | $399 | $150 | $329 | $150 | $799 |
| Release | 2018 | 2017 | 2018 | 2019 | 2022 |
Activity & Fitness | |||||
| Calories | |||||
| Cycling (Bicycling) | |||||
| Distance | |||||
| Heart | |||||
| Oxygen | |||||
| Sleep | |||||
| Steps | |||||
| Swim | |||||
Battery | |||||
| Duration | 1 day | 7 days | Not Yet | 14 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 | 384 x 480 | 348 x 442 | 502x410 pixels |
| Size | 1.32 inches | 1.4 inches | 1.78 inches | 1.65 inches | 1.92 inches |
| Touch | |||||
| Type | LCD | OLED | MicroLED | AMOLED | |
Functions | |||||
| Audio Speaker | |||||
| Clock | LTPO OLED Retina | ||||
| Phone | |||||
| Vibration | |||||
| Voice | |||||
Hardware | |||||
| Accelerometer | |||||
| Barometer or Altimeter | |||||
| Ultraviolet Sensor | |||||
| Water Resistance | 5 ATM | Not Yet | 5 ATM | 10 ATM (100 Meters) | |
Notifications | |||||
| Phone | |||||
| Emails | |||||
| Texts | |||||
Software | |||||
| Operating System | Wear OS | Watch OS 5 | Wear OS | WatchOS 9 | |
| Apps | |||||
| Music | |||||