Groupon offers the refurbished Fitbit Flex Wireless Activity and Sleep Tracking Wristband in six colors (Red pictured), model no. FB401, for $49.99. Coupon code "EXTRA15" drops the price to $42.49. With free shipping, that's $13 under our refurb mention from a month ago and the lowest total price we've seen for this activity tracker. (It's a low for a refub today by $7 and $22 under the best deal we could find for a new one.) Fitbit Flex tracks your daily activity and sleep patterns to help you attain your fitness goals. It comes with large and small wristbands. Deal ends today.

No warranty information is provided.