Suunto is stepping beyond its bone-conduction roots with the launch of the new Spark, a pair of open-ear, air-conduction headphones designed for runners who want to stay aware of their surroundings without sacrificing sound quality.
The wraparound ear hook and compact driver housing closely mirror the design popularised by Shokz (see also the Shokz OpenFit 2 review) and other open-ear running buds, which are among the fastest-growing headphone categories among runners and outdoor athletes.
