New – Earbuds that use embedded optical sensors to measure your heart rate while you listen to tunes. The commercial version of a technology that Intel showed off a while ago. Wired earbuds with an inline mic, which come in neon yellow, pink, gray, or blue.
Not a dedicated fitness tracker, because they don’t count steps or track your route. They’re merely a companion for the RunKeeper app on your phone. For passive data throughout the day, you’re still better off with a normal fitness tracker. But for intense workouts, you can shed bulky chest sensors or other wearables and just go with BioSport.