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General Info & Specifications
Sensors
Fitbit FB504 & FB505 contains the following sensors and motors:
A MEMS 3-axis accelerometer, which tracks your motion patterns
An altimeter, which tracks altitude changes
An optical heart-rate tracker
Ambient light sensor
Temperature sensor
Materials
The wristband that comes with FB504 & FB505 is made of a flexible, durable elastomer material similar
to that used in many sports watches. It doesn’t contain latex. Accessory wristbands are available in
genuine leather.
The frame on FB504 & FB505 is made of aerograde 6,000 series aluminum.
Wireless technology
FB505 contains a classic Bluetooth, Bluetooth 4.0 radio transceiver and NFC chip.
Haptic feedback
FB504 & FB505 contains a vibration motor for alarms, goals, notifications, and reminders.
Battery
FB504 & FB505 contains a rechargeable lithium-polymer battery.
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