Fitbit Charge 4 bracelet black
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| Brand: | Fitbit |
| Description: | Type: smart bracelet, features: GPS, NFC, waterproof, OS compatible: Android, Windows Phone, iOS, measurements: calorie monitoring, sleep monitoring, physical activity monitoring, continuous heart rate measurement, stopwatch, timer, etc |
| Type: | Smart bracelet |
| Headphone jack: | Absent |
| Additional functions: | Vibration, stopwatch, timer |
| Charging time: | 120 min |
| OS Compatibility: | Android, Windows Phone, iOS |
| Color display: | Monochrome |
| Bluetooth version: | 4.0 LE |
| Waiting time: | 168 h |
| Security: | Moisture protection |
| Screen Technology: | OLED |
| Heart rate sensor: | Built-in |
| Active Time: | 5 h |
| Mobile Internet: | Absent |
| Waterproof class: | WR50 5 atm |
| Monitoring: | Accelerometer, calories, heart rate, sleep, physical activity |
| Screen functions: | Touch screen |