FITBIT CHARGE 4
- Save all your movement data for seven days, minute by minute
- Save daily total for last 30 days
- Stores heart rate data at one-second intervals during exercise monitoring and five-second rest of the time
- Water resistant up to 50 meters
- After swimming or wetting the strap we recommend drying it, because like other wearables, it is better for your skin that the strap is clean and dry
- We do not recommend that you take your Fitbit Charge 4 in hot tubs or saunas
- Bluetooth LE
- Synchronization range: up to 9m
- Synchronization with mobile devices requires Bluetooth LE and Internet connection
- Syncs with computers running Mac OS X 12.2 and later, iPhone 5S and later, iPad 5th generation and later, and Android 7.0 and later
- Control music via Bluetooth LE on iOS and Android devices
- Operating temperature: -20 to 60 ° C
- Maximum operating altitude: 8535 meters
- Battery lasts up to 7 days, or up to 5 hours with GPS activated
- Battery life and charge cycles vary based on usage, configuration, and other factors; actual results will also vary
- We recommend that you charge your device every few days so that monitoring is continuous
- Battery type: lithium polymer
- Charging time (0-100%): two hours
- Radio receiver: Bluetooth 4.0
- Window diagonal 39.83 mm
- Box dimensions: 35.8 x 22.7 x 12.5 mm
- Small bracelet: Fits wrists between 140 and 180 millimeters in diameter
- Large bracelet: Fits wrists between 180 and 220 millimeters in diameter
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