View the manual for the Fitbit Sense 2 here, for free. This manual comes under the category sport watches and has been rated by 13 people with an average of a 8.3. This manual is available in the following languages: English. Do you have a question about the Fitbit Sense 2 or do you need help? Ask your question here




The Fitbit Sense 2 is a square-shaped smartwatch with a digital touchscreen display and an aluminium watch case. It features an always-on colour display, allowing for easy visibility of activity tracking, notifications, and other functions throughout the day. The band size is available in S/L, providing a comfortable fit for various wrist sizes. This sport watch is designed to track various physical activities, such as steps taken, distance covered, and calories burned. It also has features such as heart rate monitoring, SpO2 monitoring for blood oxygen levels, and sleep tracking, which provide additional insights into a user's overall health and wellness. The Fitbit Sense 2 also includes guided breathing sessions and built-in Alexa voice control for hands-free convenience. Through the Fitbit app, users can access personalized insights and goals based on their activity and wellness data, as well as track their progress over time. The watch is also water-resistant, making it suitable for swimming and showering. The Fitbit Sense 2 boasts up to 6+ days of battery life, ensuring that it can keep up with even the busiest of lifestyles. Overall, the Fitbit Sense 2 offers a range of fitness and wellness tracking features in a stylish and durable package, with the added convenience of Alexa voice control. With its customizable watch face and easy-to-use app, this sport watch is suitable for those looking to monitor and improve their daily physical activity and overall health.



| Brand | Fitbit |
| Model | Sense 2 | FB521GLBM |
| Product | sport watch |
| EAN | 0810038858388 |
| Language | English |
| Filetype | User manual (PDF) |
| Display type | Digital |
| Display resolution | - pixels |
| Touchscreen | Yes |
| Display technology | - |
| Display diagonal | - " |
| Always-on display | Yes |
| Colour display | Yes |
| Market positioning | Smartwatch |
| Watch case size | - mm |
| Watch case colour | Gold |
| Watch case material | Aluminium |
| Band colour | White |
| Band material | - |
| Band size | S/L |
| Shape | Square |
| Wrist size range | 129 - 209 mm |
| Minimum strap length | 129 mm |
| Maximum strap length | 209 mm |
| Suggested gender | Unisex |
| Waterproof | Yes |
| Closure type | Single prong strap buckle |
| Protection features | Water resistant |
| Waterproof up to | 50 m |
| Removable strap | Yes |
| Built-in microphone | Yes |
| Built-in speaker(s) | Yes |
| Built-in camera | No |
| FM radio | No |
| Mobile operating systems supported | Android, iOS |
| Operating system installed | Fitbit OS |
| Heart rate monitor | Yes |
| Blood pressure monitor | Yes |
| Blood oxygen sensor | Yes |
| Distance travelled | Yes |
| Calories burned | Yes |
| Accelerometer | Yes |
| Activity tracker | Yes |
| Quality of sleep | Yes |
| Short Message Service (SMS) | Yes |
| Vibrating motor | Yes |
| Ambient light sensor | Yes |
| Altimeter | Yes |
| Skin temperature sensor | Yes |
| Virtual assistant | Amazon Alexa |
| Smart notifications | Yes |
| SMS notifications | Yes |
| Alarm clock | Yes |
| Advanced workouts | Yes |
| Automatic daily activity detection | Yes |
| Find my phone function | Yes |
| Workout tracking | Yes |
| Call notifications | Yes |
| Thermometer | Yes |
| Vibrating alarm clock | Yes |
| Answerphone remote access | Yes |
| Heart rate sensor type | Optical |
| Mobile network connection | No |
| GPS (satellite) | Yes |
| GLONASS | Yes |
| USB port | No |
| Bluetooth | Yes |
| Wi-Fi | No |
| Bluetooth version | 5.0 |
| Near Field Communication (NFC) | Yes |
| Headphone connectivity | Bluetooth |
| Bluetooth Low Energy (BLE) | Yes |
| Battery technology | Lithium Polymer (LiPo) |
| Battery capacity | - mAh |
| Battery type | Built-in battery |
| Battery life (max) | 144 h |
| Battery life | 6 day(s) |
| Battery life (GPS mode) | 5 h |
| Battery life | 144 h |
| Charging time | 2 h |
| Operating temperature (T-T) | -10 - 45 °C |
| Width | 40.5 mm |
| Depth | 40.5 mm |
| Thickness | 12.3 mm |
| Charger | Yes |
Can't find the answer to your question in the manual? You may find the answer to your question in the FAQs about the Fitbit Sense 2 below.
It is sensible for you to switch off your sport watch at night, this ensures longer battery life.
No, no internet is required to receive GPS.
The abbreviation GPS stands for 'Global Positioning System'.
GPS is a system that can be used all over the globe to determine your location by means of satellites.
As an adult, it is recommended to do moderately intensive exercise for at least 2.5 hours per week. Preferably spread over several days.
An adult's resting heart rate is between 60 and 100 beats per minute.
As a rule of thumb for your maximum heart rate, you can use 220 minus your age.
Bluetooth is a way of exchanging data wirelessly between electronic devices via radio waves. The distance between the two devices that exchange data can in most cases be no more than ten metres.
The screen size of the Fitbit Sense 2 is - ".
The screen resolution of the Fitbit Sense 2 is - pixels.
The Fitbit Sense 2 has a width of 40.5 mm.
The Fitbit Sense 2 has a depth of 40.5 mm.
To set up and pair your Fitbit Sense 2 with your smartphone, navigate to the settings menu on your watch, select "Bluetooth", and follow the on-screen instructions to pair your device with your smartphone.
To monitor your heart rate with the Fitbit Sense 2, swipe left on the watch face to open the heart rate monitor. Ensure that the watch fits comfortably on your wrist, and wait a few moments for the watch to detect and show your current heart rate.
To customise your Fitbit Sense 2 watch face, press and hold the watch face until the customisation menu appears. From there, you can select the desired watch face, adjust the colour scheme, and include various data metrics such as steps, calories burned, or heart rate.
To track your workouts with the Fitbit Sense 2, swipe up on the watch face and select the exercise shortcut. Choose the appropriate activity and press the start button to begin tracking. The watch will record information such as duration, heart rate, and calories burned.
To view your sleep data on the Fitbit Sense 2, swipe down on the watch face and select the sleep icon. You will be able to see details about your sleep duration, sleep stages, and sleep quality.
Yes, the Fitbit Sense 2 features a digital display type. This indicates that the data on the screen is presented using digital technology, offering clear visuals for the user.
Yes, the Fitbit Sense 2 has an always-on display. This means that the screen will remain visible at all times, allowing the user to easily check the time or other information without having to tap or wake up the device.
The Fitbit Sense 2 is positioned as a smartwatch. This means that it offers advanced features and capabilities beyond just timekeeping, such as fitness tracking, notifications, and other smart functionalities.
Yes, the Fitbit Sense 2 is waterproof. It is water-resistant up to 50 meters, making it suitable for swimming and other water-based activities. This level of waterproofing ensures that the watch can withstand splashes, showers, and even brief immersion in water without being damaged.
No, the Fitbit Sense 2 does not have a built-in camera. While it offers various features for health and fitness tracking, it does not include a camera function. This may be a drawback for users looking to capture photos directly from their smartwatch, but it does not impact its core functionalities as a fitness-focused device.
Yes, the manual of the Fitbit Sense 2 is available in English .
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Number of questions: 3After restoring to factory settings, the phone started up in English and the settings icon is not active on the screen.
The time shown on my sense 2 has stopped moving on, it is showing 8:00, how do I get the correct time showing?
My ' sleep score ' has stopped working. I have re booted my watch three times but can't get it working. Any ideas please?