I tested the Suunto Spark earbuds for a month: Why air conduction audio is a winner

## Executive summary This is a hands-on review of the Suunto Spark earbuds highlighting pros (outstanding audio, reliable touch controls, seven-hour battery life, IP55 resistance, open-ear design) and cons (limited full functionality requires a Suunto watch, no wireless charging case), along with details on fit, sound modes, app customization, head-movement controls, and use cases for running and commuting.