Amazon has the Fitbit Charge Wireless Activity & Sleep Band in black, model no. FB404BKL, for $90.30 (129.99 – 39.65 instant savings) with Free Shipping for a limited time. It’s only available in Large, which fits wrists measuring 6.2″ to 7.6″.

Energize your day with Charge—an advanced activity wristband that tracks your steps taken, distance traveled, calories burned, floors climbed and active minutes. Stay connected throughout the day with real-time fitness stats and Caller ID on the OLED display. And when the day is done, automatically monitor your sleep and set a silent, vibrating alarm. Whether you’re at the office or on the go, Charge wirelessly syncs your stats to your smartphone and computer to help you find the motivation you need to achieve your goals.