Fitbit Charge Wireless Activity Wristband, Black, Large (6.3-7.9 in) Accurately track all-day stats like steps taken, distance traveled, calories burned, stairs climbed, and active minutes See daily stats, time of day, and exercise mode with a bright OLED display Monitor your sleep automatically and wake with a silent alarm Get call notifications right on your wrist Access real-time run stats like time, distance, and pace to stay on track