EngadgetWearable fitness tracker maker Fitbit sued by rival JawboneReutersFitbit, which makes both wristbands and clippable devices that monitor a user's fitness activity, filed for an initial public offering earlier this month. The company's revenue almost tripled to $745.4 million in 2014 and it posted a profit of $131.8 ...Wearable fitness tracker maker Fitbit sued by rival Jawbone: NYTBusiness Insidertất cả 16 bài viết »