Polar M400 vs. Withings Pulse Ox vs. Fitbit Charge vs. Apple Watch Series 4 vs. LG G Watch R
 | | | | | |
| PolarM400Remove Buy Now | WithingsPulse OxRemove Buy Now | FitbitChargeRemove Buy Now | AppleWatch Series 4Remove Buy Now | LGG Watch RRemove Buy Now |
Basic Info | |||||
| Suggested Price | $200 | $120 | $130 | $329 | $300 |
| Release | 2014 | 2014 | 2014 | 2018 | 2014 |
Activity & Fitness | |||||
| Calories | |||||
| Cycling (Bicycling) | |||||
| Distance | |||||
| Heart | n/a | ||||
| Oxygen | |||||
| Sleep | |||||
| Steps | |||||
| Swim | |||||
Battery | |||||
| Duration | 8 hours to 30 days | 2 weeks | 7-10 days | Not Yet | 2 days |
| Rechargeable | |||||
Compatibility | |||||
| Android | |||||
| iOS | |||||
| Windows Phone | n/a | n/a | NA | n/a | |
| Mac | n/a | n/a | |||
| Windows | n/a | n/a | |||
Connectivity | |||||
| Bluetooth | |||||
| Cellular | |||||
| GPS | |||||
| NFC | |||||
| Wi-Fi | |||||
Display | |||||
| Color | blue | ||||
| Resolution | n/a | 128 x 32 | NA | 384 x 480 | 320 x 320 |
| Size | n/a | n/a | NA | 1.78 inches | 1.3 inches |
| Touch | Swipe | NA | |||
| Type | n/a | OLED | OLED | MicroLED | P-OLED |
Functions | |||||
| Audio Speaker | Alerts only | ||||
| Clock | |||||
| Phone | |||||
| Vibration | |||||
| Voice | |||||
Hardware | |||||
| Accelerometer | |||||
| Barometer or Altimeter | |||||
| Ultraviolet Sensor | |||||
| Water Resistance | 3 ATM | 1 ATM | Not Yet | IP67 | |
Notifications | |||||
| Phone | |||||
| Emails | |||||
| Texts | |||||
Software | |||||
| Operating System | n/a | n/a | NA | Watch OS 5 | Android Wear |
| Apps | |||||
| Music | |||||