Fitbit Charge 3 vs Fitbit Charge 4
Fitbit Charge 3
2018 · $99.99 today
7049
Fitbit Charge 4
2020 · $99.95 today
7860
Dashed outline = score at launch
Why Fitbit Charge 3 is better
- Water Resistance: 50m vs 5 ATM(10.0× more)
Why Fitbit Charge 4 is better
No standout numeric advantages.
Verdict
Fitbit Charge 4 leads outright in 5 of 6 dimensions today.
Spec by spec
| Spec | Fitbit Charge 3 | Fitbit Charge 4 |
|---|---|---|
| Health & Sensors | ||
| Heart Rate Sensor | PurePulse optical | Optical wrist HR (PurePulse) |
| SpO2 Sensor | Yes (hardware only) | Yes |
| ECG | No | No |
| Fitness Tracking | ||
| Built-in GPS | Connected GPS only | Yes |
| Sport Modes | 15 modes | — |
| Water Resistance | 50m● | 5 ATM |
| Battery & Charging | ||
| Battery Life | 7 days | 7 days |
| Charge Time | 2 hrs | 2 hrs |
| Display & Design | ||
| Display Type | Grayscale OLED touch | — |
| Weight | 29 g | — |
| Display | ||
| Screen Type | — | OLED touchscreen (no color) |
| Screen Size | — | 0.99 in |
| Always-On Display | — | No |
| Sensors & Health | ||
| Heart Rate Sensor | PurePulse optical | Optical wrist HR (PurePulse) |
| SpO2 Sensor | Yes (hardware only) | Yes |
| ECG | No | No |
| Battery | ||
| Battery Life | 7 days | 7 days |
| Charge Time | 2 hrs | 2 hrs |
| Fitness & Connectivity | ||
| Built-in GPS | Connected GPS only | Yes |
| Water Resistance | 50m● | 5 ATM |
| NFC Payments | — | Yes (Special Edition) |