Fitbit Charge 2 vs. Apple Watch vs. Amazfit T-Rex vs. Apple Watch Ultra
 | | | | |
| FitbitCharge 2Remove Buy Now | AppleWatchRemove Buy Now | AmazfitT-RexRemove Buy Now | AppleWatch UltraRemove Buy Now |
Basic Info | ||||
| Suggested Price | $150 | $349 | $140 | $799 |
| Release | 2016 | 2015 | 2019 | 2022 |
Activity & Fitness | ||||
| Calories | ||||
| Cycling (Bicycling) | ||||
| Distance | ||||
| Heart | ||||
| Oxygen | ||||
| Sleep | ||||
| Steps | ||||
| Swim | ||||
Battery | ||||
| Duration | 5 days | 18 hours | 20 days | 36 hrs |
| Rechargeable | ||||
Compatibility | ||||
| Android | ||||
| iOS | ||||
| Windows Phone | NA | |||
| Mac | NA | |||
| Windows | NA | |||
Connectivity | ||||
| Bluetooth | ||||
| Cellular | ||||
| GPS | ||||
| NFC | ||||
| Wi-Fi | ||||
Display | ||||
| Color | ||||
| Resolution | n/a | 340 x 272 or 390 x 312 | 360 x 360 | 502x410 pixels |
| Size | n/a | 1.5 inches or 1.65 inches | 1.3 inches | 1.92 inches |
| Touch | n/a | |||
| Type | OLED | AMOLED | AMOLED | |
Functions | ||||
| Audio Speaker | ||||
| Clock | LTPO OLED Retina | |||
| Phone | ||||
| Vibration | ||||
| Voice | ||||
Hardware | ||||
| Accelerometer | ||||
| Barometer or Altimeter | ||||
| Ultraviolet Sensor | ||||
| Water Resistance | n/a | IPX7 | 5 ATM | 10 ATM (100 Meters) |
Notifications | ||||
| Phone | ||||
| Emails | ||||
| Texts | ||||
Software | ||||
| Operating System | n/a | Watch OS | Build-in | WatchOS 9 |
| Apps | ||||
| Music | ||||