Withings today announced their latest affordable fitness tracker. It's the $80 Withings Go. The fitness tracker has an e-ink display to show you how many steps you've taken, as well as a quick look at the time. It can also track whether you're walking, running, swimming or sleeping. The fitness band lasts up to 8 months on a single charge, and the data can be synced with the Withings Android app. You can buy the Withings Go starting today at $79.95.