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General Info and Specifications
Sensors andComponents
Fitbit Sense 2 contains the following sensors and motors:
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Multi-path optical heart rate tracker
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Electrical sensor to measure skin conductance (cEDA)for stress detection
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Multipurpose electrical sensors compatible with the ECGapp and EDA Scan
app
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Red and infrared sensors for oxygen saturation (SpO2) monitoring
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Gyroscope
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Altimeter, which tracks altitude changes
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3-axis accelerometer, which tracks motion patterns
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On-wrist skin temperature sensor
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Ambient light sensor
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NFC
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Built-in GPSreceiver + GLONASS, which tracks your location during a workout
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Vibration motor
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Speaker
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Microphone
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WiFi (deactivated, cannot be turned on)
Materials
The band that comes with Sense 2 is made of a flexible, durable elastomer material
similar to that used in many sports watches.
The housing and buckle on Sense 2 are made of aluminum. While aluminum can
contain traces of nickel, which can cause an allergic reaction in someone with nickel
sensitivity, the amount of nickel in all Fitbit products meets the European Union's
stringent Nickel Directive.
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