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Fitbit Charge HR

Released:2015OS:Fitbit OS
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Specifications

Processor

32-bit ARM STM32L151RD based microcontroller

Display

0.4" OLED Tap display (single-line monochrome)

Battery

Battery Life:Up to ~5 days typical usage
Charging:Proprietary USB charging cable (1-2 hours full charge)

Sensors

Optical heart-rate sensor (wrist-based, continuous), 3-axis accelerometer, Barometric altimeter (floors climbed), Vibration motor

Water Resistance

Splash/sweat resistant (not swim-proof) – approx. 1 ATM / 10 m

Connectivity

Bluetooth 4.0 wireless sync (range ~6 m) + USB dongle for PC

Physical Aspects

Design:Elastomer strap, stainless-steel buckle, fits wrist sizes small to extra large
Weight:Approx. ~26 g

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