Shokz is one of the best-known names in the fitness headphone space and finally it has turned its attention to a burgeoning new market and thus challenge a big rival: clip-on open earbuds (and Bose).

★★★☆☆ The tiny, super-light earbuds take a "C" shape. Photo: David Snow/Cult of Mac EarFun Clip earbuds entered an increasingly crowded open-ear clip-on audio market Monday, promising premium features ...