Jawbone launches UP2, UP4 fitness trackers (with mobile payments for the UP4)

Jawbone is updating its UP line of fitness trackers with two new models. The UP2 is A $100 model that offers all the basic features you’d expect from an activity-tracking fitness band including step counting, sleep tracking, week-long battery life, and the ability to sync with iOS or Android apps. Or for $200 you can […]