Fitbit Charge 3 Woven Charcoal Special Edition Small S Grey Band FB415SRWT - Special Edition - FREE FAST SHIPPING Tested - Fully functional Unit is in good condition (see pictures). Shows some cosmetic wear from normal use (please refer to the detailed pictures), but overall this unit looks and works great! Please refer to the pictures for the condition of the item. Better measure calorie burn, understand resting heart rate more with 24/7 heart rate tracking and a battery life of up to 7 days (varies with use and other factors). Fit guide - For small wrists (5.5-7.1 inches) and for large wrist (7.1-8.7 inches) 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 and see activity trends, health insights and personalized guidance in one place with Fitbit Today Swim proof and water resistant to 50 Meters so you can track swims and wear in the shower. 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 call, text and smartphone app notifications on your wrist. Syncing range up to 6 meters