Fitbit FB521BKGB Sense 2 Black Gps Satellite FB521BKGB

Design



Band colour



Black


Band size



S/L


Closure type



Single prong strap buckle


Market positioning



Smartwatch


Maximum strap length



20.9 cm


Minimum strap length



12.9 cm


Protection features



Water resistant


Shape



Square


Suggested gender



Unisex


Watch case colour



Black


Watch case material



Aluminium


Waterproof



Yes


Waterproof up to



50 m


Wrist size range



129 - 209 mm


Display



Always-on display



Yes


Colour display



Yes


Display type



Digital


Touchscreen



Yes


Features



Accelerometer



Yes


Activity tracker



Yes


Advanced workouts



Yes


Alarm clock



Yes


Altimeter



Yes


Ambient light sensor



Yes


Answerphone remote access



Yes


Automatic daily activity detection



Yes


Blood oxygen sensor



Yes


Blood pressure monitor



Yes


Call notifications



Yes


Calories burned



Yes


Distance travelled



Yes


Find my phone function



Yes


Heart rate monitor



Yes


Heart rate sensor type



Optical


Quality of sleep



Yes


Short Message Service (SMS)



Yes


Skin temperature sensor



Yes


Smart notifications



Yes


SMS notifications



Yes


Thermometer



Yes


Vibrating alarm clock



Yes


Vibrating motor



Yes


Virtual assistant



Amazon Alexa


Workout tracking



Yes


Network



GLONASS



Yes


GPS (satellite)



Yes


Mobile network connection



No


Operational conditions



Operating temperature (T-T)



-10 - 45 �C


Package dimensions



Gross Weight (Package, kg)



0.04 kg


Packaging content



Charger



Yes


Performance



Built-in camera



No


Built-in microphone



Yes


Built-in speaker(s)



Yes


FM radio



No


Mobile operating systems supported



Android, iOS


Ports & interfaces



Bluetooth



Yes


Bluetooth Low Energy (BLE)



Yes


Bluetooth version



5.0


Headphone connectivity



Bluetooth


Near Field Communication (NFC)



Yes


USB port



No


Wi-Fi



No


Power



Battery life



144 Hour


Battery life



6 day(s)


Battery life (GPS mode)



5 Hour


Battery life (max)



144 Hour


Battery technology



Lithium Polymer (LiPo)


Battery type



Built-in battery


Charging time



2 Hour


Product dimensions



Net Weight (Product, kg)



0.03 kg


Product Depth



4.05 cm


Product Width



4.05 cm


Vendor information



Brand Name


Fitbit


Warranty



1 Year(s)


Weight & dimensions



Thickness



1.23 cm