Weight & dimensions | Width | 40.5 mm |
![](/p.gif) | Depth | 40.5 mm |
![](/p.gif) | Thickness | 11.2 mm |
Network | GPS (satellite) | Yes |
![](/p.gif) | GLONASS | Yes |
Operational conditions | Operating temperature (T-T) | -10 - 45 °C |
Ports & interfaces | Bluetooth version | 5.0 |
![](/p.gif) | Near Field Communication (NFC) | Yes |
![](/p.gif) | Headphone connectivity | Bluetooth |
![](/p.gif) | Bluetooth | Yes |
![](/p.gif) | Bluetooth Low Energy (BLE) | Yes |
Performance | Built-in microphone | Yes |
![](/p.gif) | Built-in speaker(s) | Yes |
![](/p.gif) | Mobile operating systems supported | Android, iOS |
![](/p.gif) | Operating system installed | Fitbit OS |
Display | Display type | Digital |
![](/p.gif) | Touchscreen | Yes |
![](/p.gif) | Always-on display | Yes |
![](/p.gif) | Colour display | Yes |
Design | Market positioning | Smartwatch |
![](/p.gif) | Watch case colour | Platinum |
![](/p.gif) | Watch case material | Aluminium |
![](/p.gif) | Band colour | Blue |
![](/p.gif) | Band size | S/L |
![](/p.gif) | Shape | Square |
![](/p.gif) | Wrist size range | 129 - 209 mm |
![](/p.gif) | Minimum strap length | 129 mm |
![](/p.gif) | Maximum strap length | 209 mm |
![](/p.gif) | Suggested gender | Unisex |
![](/p.gif) | Waterproof | Yes |
![](/p.gif) | Closure type | Single prong strap buckle |
![](/p.gif) | Protection features | Water resistant |
![](/p.gif) | Removable strap | Yes |
![](/p.gif) | Magnetic charging connector | Yes |
![](/p.gif) | Waterproof up to | 50 m |
Power | Battery type | Built-in battery |
![](/p.gif) | Battery technology | Lithium Polymer (LiPo) |
![](/p.gif) | Battery life (max) | 144 h |
![](/p.gif) | Battery life | 6 day(s) |
![](/p.gif) | ![](/p.gif) | 144 h |
![](/p.gif) | Charging time | 2 h |
Features | Heart rate monitor | Yes |
![](/p.gif) | Heart rate sensor type | Optical |
![](/p.gif) | Blood pressure monitor | Yes |
![](/p.gif) | Blood oxygen sensor | Yes |
![](/p.gif) | Distance travelled | Yes |
![](/p.gif) | Calories burned | Yes |
![](/p.gif) | Accelerometer | Yes |
![](/p.gif) | Activity tracker | Yes |
![](/p.gif) | Personal goals | Yes |
![](/p.gif) | Quality of sleep | Yes |
![](/p.gif) | Short Message Service (SMS) | Yes |
![](/p.gif) | Vibrating motor | Yes |
![](/p.gif) | Ambient light sensor | Yes |
![](/p.gif) | Virtual assistant | Amazon Alexa |
![](/p.gif) | Smart notifications | Yes |
![](/p.gif) | Answerphone remote access | Yes |
![](/p.gif) | SMS notifications | Yes |
![](/p.gif) | Skin temperature sensor | Yes |
![](/p.gif) | Stress monitoring function | Yes |
![](/p.gif) | Barometric altimeter | Yes |
![](/p.gif) | Alarm clock | Yes |
![](/p.gif) | Advanced workouts | Yes |
![](/p.gif) | Automatic daily activity detection | Yes |
![](/p.gif) | Find my phone function | Yes |
![](/p.gif) | Workout tracking | Yes |
![](/p.gif) | Call notifications | Yes |
![](/p.gif) | Altimeter | Yes |
![](/p.gif) | Vibrating alarm clock | Yes |
Packaging content | Charger | Yes |