AT&T Wireless offers the Fitbit Flex Wireless Activity and Sleep Wristband in Black, model no. FB401BK, or Blue, model no. FB401BL, for $99. Coupon code "COLIN20" cuts it to $79. With free shipping, that's $4 under our mention from three days ago (which included a pair of earbuds) and the lowest total price we could find for any color by $15. It tracks your daily activity and sleep patterns to help you attain your fitness goals. Coupon expires December 25.