Polar M400 vs. Garmin Vivofit 3 vs. Acer Liquid Leap vs. Apple Watch 7 vs. Apple SE
 | | | | | |
| PolarM400Remove Buy Now | GarminVivofit 3Remove Buy Now | AcerLiquid LeapRemove Buy Now | AppleWatch 7Remove Buy Now | AppleSERemove Buy Now |
Basic Info | |||||
| Suggested Price | $200 | $100 | $90 | $429 | $279 |
| Release | 2014 | 2016 | 2015 | 2021 | 2020 |
Activity & Fitness | |||||
| Calories | |||||
| Cycling (Bicycling) | |||||
| Distance | |||||
| Heart | n/a | n/a | |||
| Oxygen | |||||
| Sleep | |||||
| Steps | |||||
| Swim | |||||
Battery | |||||
| Duration | 8 hours to 30 days | 1 year | 5 to 7 days | 18 Hours | 18 hours |
| Rechargeable | |||||
Compatibility | |||||
| Android | |||||
| iOS | |||||
| Windows Phone | n/a | ||||
| Mac | n/a | ||||
| Windows | n/a | ||||
Connectivity | |||||
| Bluetooth | |||||
| Cellular | |||||
| GPS | |||||
| NFC | |||||
| Wi-Fi | |||||
Display | |||||
| Color | |||||
| Resolution | n/a | 64 x 64 | 128 x 32 | 396 x 484 | 384 x 480 |
| Size | n/a | 0.55 inches | 1 inch | 1.9 inches | 40mm |
| Touch | |||||
| Type | n/a | n/a | OLED | MicroLED | MicroLED |
Functions | |||||
| Audio Speaker | Alerts only | ||||
| Clock | |||||
| Phone | |||||
| Vibration | |||||
| Voice | |||||
Hardware | |||||
| Accelerometer | |||||
| Barometer or Altimeter | |||||
| Ultraviolet Sensor | Not yet | ||||
| Water Resistance | 3 ATM | 5 ATM | IPX4 | water resistant but not waterproof | |
Notifications | |||||
| Phone | |||||
| Emails | |||||
| Texts | |||||
Software | |||||
| Operating System | n/a | n/a | WatchOS 8 | WatchOS 5 | |
| Apps | |||||
| Music | |||||