Don't hold a charge very long maybe a day other than that it works good The Fitbit Charge 2 HeartRate + Fitness Wristband in Black Large is an activity tracker that provides heart rate measurement. Designed for running and jogging, this wristband from Fitbit is a reliable tool for tracking fitness progress and monitoring heart rate during workouts. Its sleek black design adds a touch of style to the functionality of this popular fitness technology product.
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