***Heavily Used*** Fitbit Charge 3 Fitness Activity Tracker, Graphite/Black, One Size (S and L Bands Included)

Additional Details from the Manufacturer

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More features

• Better measure calorie burn, understand resting heart rate & more with 24x7 heart rate tracking and a battery life of up to 7 days (varies with use and other factors); charge time (0 to 100%) 2 hours
• Choose from 15 plus exercise modes like run, bike, swim, yoga, circuit training and more, set a goal, and get real time stats during your workouts to see how you can keep getting better
• Automatically record time spent in light, deep and REM sleep stages, see Activity trends, healthy insights, and personalized guidance in one place with Fitbit today. Operating temperature is -10° to 45° Celsius
• Swim proof and water resistant to 50 meters, so you can track swims and wear in the shower; we do not recommend wearing charge 3 in a hot tub or sauna; also connect to Smartphone GPS for real time pace and distance during outdoor runs and rides
• Stay connected to your day with everyday apps for weather and more and get called, text and smartphone app notifications on your wrist; small wristband fits a wrist between 5.5 to 7.1 inches; large wrist band fits a wrist between 7.1 to 8.7 inches
• Radio transceiver: Bluetooth 4.0. Syncing range up to 6 meters