User manual
Table Of Contents
- Get started
- Unlock Fitbit Premium
- Wear Sense 2
- Basics
- Clock Faces, Tiles, and Apps
- Voice Assistant
- Lifestyle
- Notifications from your phone
- Timekeeping
- Activity and Wellness
- Exercise and Heart Health
- Fitbit Pay
- Update, Restart, and Erase
- Troubleshooting
- General Info and Specifications
- Regulatory and Safety Notices
- USA: Federal Communications Commission (FCC) statement
- Canada: Industry Canada (IC) statement
- European Union (EU)
- Argentina
- Australia and New Zealand
- Ghana
- Indonesia
- Israel
- Japan
- Kingdom of Saudi Arabia
- Malaysia
- Mexico
- Morocco
- Nigeria
- Oman
- Paraguay
- Philippines
- Serbia
- Singapore
- South Korea
- Taiwan
- Thailand
- United Arab Emirates
- United Kingdom
- Vietnam
- About the Battery
- IP Rating
- Safety Statement
- Regulatory Markings
- Customiz
CAUTION: Risk of explosion if battery is replaced by an incorrect type. Dispose of
used batteries according to the instructions.
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The battery must be recycled or disposed of properly
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Use the battery only in the specified equipment
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Do not leave the battery in an extremely high temperature environment that
may result in an explosion or the leakage of flammable liquid or gas
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Do not subject battery to extremely low air pressure that may result in an
explosion or the leakage of flammable liquid or gas
IP Rating
Notice to the User: Regulatory content can also be viewed on your device. To view
the content:
Settings About Sense 2 Regulatory Info
Model FB521 has a water resistance rating of IPX8 under IEC standard 60529, up to
a depth of 50 meters.
Model FB521 has a dust ingress rating of IP6X under IEC standard 60529 which
indicates the device is dust-tight.
Safety Statement
This equipment has been tested to comply with safety certification in accordance
with the specifications of: IEC 60950-1:2005, AMD 1:2009, AND2:2013, EN 60950-
1:2006 + A11:2009 + A1:2010 + A12:2011 + A2:2013, IEC 62368-1:2014, EN 62368-
1:2014 + A11:2017, IEC 62368-1: 2020 + A11: 2020, EN62368-1: 2018, EN IEC 62368-
1:2020 + A11:2020, BS EN 62368-1: 2014 + A11: 2017, BS EN IEC 62368-1:2020 +
A11:2020.
Regulatory Markings
Device regulatory markings can be viewed on your device by removing the band.
Markings are located in the band attach area.
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