Polar M400 vs. Asus ZenWatch vs. Swatch Touch Zero One vs. Amazfit T-Rex vs. Apple Watch Ultra
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| PolarM400Remove Buy Now | AsusZenWatchRemove Buy Now | SwatchTouch Zero OneRemove Buy Now | AmazfitT-RexRemove Buy Now | AppleWatch UltraRemove Buy Now |
Basic Info | |||||
| Suggested Price | $200 | $150 | $220 | $140 | $799 |
| Release | 2014 | 2014 | 2015 | 2019 | 2022 |
Activity & Fitness | |||||
| Calories | |||||
| Cycling (Bicycling) | |||||
| Distance | |||||
| Heart | n/a | ||||
| Oxygen | |||||
| Sleep | n/a | ||||
| Steps | |||||
| Swim | n/a | ||||
Battery | |||||
| Duration | 8 hours to 30 days | NA | n/a | 20 days | 36 hrs |
| Rechargeable | |||||
Compatibility | |||||
| Android | n/a | ||||
| iOS | n/a | ||||
| Windows Phone | n/a | NA | n/a | ||
| Mac | NA | n/a | |||
| Windows | NA | n/a | |||
Connectivity | |||||
| Bluetooth | |||||
| Cellular | |||||
| GPS | |||||
| NFC | |||||
| Wi-Fi | |||||
Display | |||||
| Color | |||||
| Resolution | n/a | 320 x 320 | n/a | 360 x 360 | 502x410 pixels |
| Size | n/a | 1.63 inches | n/a | 1.3 inches | 1.92 inches |
| Touch | |||||
| Type | n/a | AMOLED | n/a | AMOLED | |
Functions | |||||
| Audio Speaker | Alerts only | n/a | |||
| Clock | LTPO OLED Retina | ||||
| Phone | n/a | ||||
| Vibration | n/a | ||||
| Voice | |||||
Hardware | |||||
| Accelerometer | |||||
| Barometer or Altimeter | n/a | ||||
| Ultraviolet Sensor | |||||
| Water Resistance | 3 ATM | IP55 | 5 ATM | 10 ATM (100 Meters) | |
Notifications | |||||
| Phone | n/a | ||||
| Emails | NA | n/a | |||
| Texts | NA | n/a | |||
Software | |||||
| Operating System | n/a | Android Wear | n/a | Build-in | WatchOS 9 |
| Apps | |||||
| Music | n/a | ||||