Polar M400 vs. TomTom Spark vs. LG Watch Sport vs. Apple Watch Series 4 vs. Apple Watch 7
 | | | | | |
| PolarM400Remove Buy Now | TomTomSparkRemove Buy Now | LGWatch SportRemove Buy Now | AppleWatch Series 4Remove Buy Now | AppleWatch 7Remove Buy Now |
Basic Info | |||||
| Suggested Price | $200 | $150 | $349 | $329 | $429 |
| Release | 2014 | 2015 | 2016 | 2018 | 2021 |
Activity & Fitness | |||||
| Calories | |||||
| Cycling (Bicycling) | |||||
| Distance | |||||
| Heart | n/a | n/a | |||
| Oxygen | |||||
| Sleep | |||||
| Steps | |||||
| Swim | |||||
Battery | |||||
| Duration | 8 hours to 30 days | n/a | 1.45 days | Not Yet | 18 Hours |
| Rechargeable | |||||
Compatibility | |||||
| Android | |||||
| iOS | |||||
| Windows Phone | n/a | n/a | |||
| Mac | |||||
| Windows | |||||
Connectivity | |||||
| Bluetooth | |||||
| Cellular | |||||
| GPS | |||||
| NFC | |||||
| Wi-Fi | |||||
Display | |||||
| Color | n/a | ||||
| Resolution | n/a | n/a | 480 x 480 | 384 x 480 | 396 x 484 |
| Size | n/a | n/a | 1.38 inches | 1.78 inches | 1.9 inches |
| Touch | |||||
| Type | n/a | LCD | P-OLED | MicroLED | MicroLED |
Functions | |||||
| Audio Speaker | Alerts only | Bluetooth | |||
| Clock | |||||
| Phone | n/a | ||||
| Vibration | |||||
| Voice | |||||
Hardware | |||||
| Accelerometer | |||||
| Barometer or Altimeter | |||||
| Ultraviolet Sensor | |||||
| Water Resistance | 3 ATM | 5 ATM | IP68 | Not Yet | water resistant but not waterproof |
Notifications | |||||
| Phone | n/a | ||||
| Emails | n/a | ||||
| Texts | n/a | ||||
Software | |||||
| Operating System | n/a | n/a | Android Wear 2 | Watch OS 5 | WatchOS 8 |
| Apps | |||||
| Music | |||||