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- Fitbit Charge 4 vs Fitbit Charge 2 Smart Band
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| key specs | ||||
| Water Resistant | Yes | No | ||
| Heart Rate Monitor | Yes | Yes | ||
| Compatible Devices | iOS and Android | Android phones, iPhones | ||
| Battery Life (Days) | 7 | 5 | ||
| Display Type | - | OLED | ||
| general | ||||
| Brand | Fitbit | Fitbit | ||
| Model | Charge 4 | Charge 2 Smart Band | ||
| Release date | March 31, 2020 | - | ||
| Reading Type | Digital | Digital | ||
| Ideal For | Unisex | Unisex | ||
| Suitable For | Sports, Fitness | Fitness | ||
| Water Resistant | Yes | No | ||
| Model Name | - | Charge 2 | ||
| Color | - | Black | ||
| Material | - | Elastomer | ||
| Touch Enabled | - | Yes | ||
| Dial Shape | - | Rectangle | ||
| display and battery features | ||||
| Battery Life (Days) | 7 | 5 | ||
| Battery Type | Lithium Polymer (Li-poly) | Lithium Polymer (Li-poly) | ||
| Display Type | - | OLED | ||
| Backlight Present | - | Yes | ||
| Charge Time (hours) | - | 2 | ||
| performance features | ||||
| Water-Resistant Depth (metres) | 50 | - | ||
| Shock Resistant | - | No | ||
| Operating Temperature (Celsius) | - | -10° to 45° | ||
| connectivity features | ||||
| Bluetooth Enabled | Yes | Yes | ||
| Bluetooth Version | v4 | v4 | ||
| compatibility | ||||
| Compatible Devices | iOS and Android | Android phones, iPhones | ||
| Compatible Android Version | - | Android 4.4 and above | ||
| activity tracking function | ||||
| Heart Rate Monitor | Yes | Yes | ||
| Step Counter | Yes | Yes | ||
| Alarms | - | Yes | ||
| Automatic Exercise Detection | - | Yes | ||
| Blood Pressure Monitor | - | Yes | ||
| Calories Burned | - | Yes | ||
| Distance Covered | - | Yes | ||
| Do Not Disturb Mode | - | Yes | ||
| Floors Climbed | - | Yes | ||
| Phone Notifications | - | Yes | ||
| Reminders | - | Yes | ||
| Sedentary Reminder | - | Yes | ||
| Sleep Tracking | - | Yes | ||
| SPO2 Monitor | - | Yes | ||
| VO2 Max | - | Yes | ||
| sensors | ||||
| Accelerometer | Yes | Yes | ||
| Barometric Altimeter | Yes | - | ||
| Optical Heart Rate Sensor | Yes | Yes | ||
| Vibration Motor | Yes | Yes | ||
| Pedometer | - | Yes | ||
| dimensions | ||||
| Width (mm) | 22.7 | - | ||
| Height (mm) | 35.8 | - | ||
| Depth (mm) | 12.5 | - | ||
| workout modes | ||||
| Exercise | - | Yes | ||
| Outdoor Running | - | Yes | ||
| Cycling | - | Yes | ||
| Walking | - | Yes | ||
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