Polar M400 vs. Huawei Talkband B2 vs. Amazfit Stratos vs. Michael Kors Grayson vs. Michael Kors Grayson vs. Apple Watch Ultra
 | | | | | | |
| PolarM400Remove Buy Now | HuaweiTalkband B2Remove Buy Now | AmazfitStratosRemove Buy Now | Michael KorsGraysonRemove Buy Now | Michael KorsGraysonRemove Buy Now | AppleWatch UltraRemove Buy Now |
Basic Info | ||||||
| Suggested Price | $200 | $180 | $199 | $350 | $350 | $799 |
| Release | 2014 | 2015 | 2018 | 2018 | 2018 | 2022 |
Activity & Fitness | ||||||
| Calories | ||||||
| Cycling (Bicycling) | ||||||
| Distance | ||||||
| Heart | n/a | |||||
| Oxygen | ||||||
| Sleep | ||||||
| Steps | ||||||
| Swim | ||||||
Battery | ||||||
| Duration | 8 hours to 30 days | 3 days | 5 days | 24 hours | 24 hours | 36 hrs |
| Rechargeable | ||||||
Compatibility | ||||||
| Android | ||||||
| iOS | ||||||
| Windows Phone | n/a | n/a | ||||
| Mac | n/a | |||||
| Windows | n/a | |||||
Connectivity | ||||||
| Bluetooth | ||||||
| Cellular | ||||||
| GPS | ||||||
| NFC | ||||||
| Wi-Fi | ||||||
Display | ||||||
| Color | ||||||
| Resolution | n/a | 128 x 88 | 320 x 300 | 453 x 454 | 453x454 | 502x410 pixels |
| Size | n/a | 0.73 inches | 1.34 inches | 1.39 inches | 1.39 inches | 1.92 inches |
| Touch | ||||||
| Type | n/a | PMOLED | OLED | AMOLED | AMOLED | |
Functions | ||||||
| Audio Speaker | Alerts only | Bluetooth | ||||
| Clock | LTPO OLED Retina | |||||
| Phone | ||||||
| Vibration | ||||||
| Voice | ||||||
Hardware | ||||||
| Accelerometer | ||||||
| Barometer or Altimeter | ||||||
| Ultraviolet Sensor | ||||||
| Water Resistance | 3 ATM | IP57 | 5 ATM | 1 ATM | 1 ATM | 10 ATM (100 Meters) |
Notifications | ||||||
| Phone | ||||||
| Emails | ||||||
| Texts | ||||||
Software | ||||||
| Operating System | n/a | n/a | Proprietary | Android Wear | Android Wear | WatchOS 9 |
| Apps | ||||||
| Music | ||||||