Fitbit® Flex® Wireless Activity & Sleep Wristband Slate. This slim, stylish device is with you all the time. During the day, it tracks steps, distance, and calories burned. At night, it tracks your sleep quality and wakes you silently in the morning. Just check out the lights to see how you stack up against your personal goal. It's the motivation you need to get out and be more active. Buy this product and Save $33.04 Off on Fitbit Flex Wireless Activity + Sleep Wristband for $66.95 after instant rebate with free shipping at Rakuten.com.