Reviewers consistently frame the H2O Audio TRI 2 PRO as a specialist swim headset rather than a general-purpose sports headphone. Its strongest case is practical: secure fit in water, very high waterproof confidence, onboard storage, and Playlist+ make pool sessions possible without a phone or Bluetooth signal. The tradeoff is that the same bone-conduction design and offline workflow frustrate some reviewers on land, where bass, clarity, and maximum-volume behavior often fall short of regular earbuds or rival open-ear options. Controls and setup split opinions too, ranging from simple and tactile to stiff, finicky, or time-consuming.