Thats because they sound good while minimizing the discomfort bone conduction headphones often have.

The Tri 2 Pro Multi-Sport, at 3.2 grams, is very lightweight.

Its extremely stable and doesnt move at all even with rapid head movements.

H2O Audio Tri 2 Pro Multi-Sport charging case and non-charging case

headset, charging case, regular case, and accessories

Its charging port is a unique proprietary one, most likely to keep the headset fully waterproof.

Still, its a welcome way to add music to the onboard storage without buying MP3s.

Doing that through the app where I could control by pressing on the app was much easier.

H2O Audio Tri 2 Pro Multi-Sport charging port on headphones

In general, the app was easy to navigate.

These types of headphones transmit sound by essentially vibrating the frequencies through the high cheek bones.

Check out our guide tohow bone conduction headphones workfor more details.

H2O Audio Tri 2 Pro Multi-Sport app front page

(Image credit: Future / James Holland)

Regarding the sound quality itself, its good but dont expect hi-res audio.

But, they do reproduce everything well enough.

The midrange is nice and full, while the high-end is a little rolled off but doesnt sound veiled.

H2O Audio Tri 2 Pro Multi-Sport app library organization

(Image credit: Future / James Holland)

As is often the case with bone-conduction headphones, its good for the form factor and thats good enough.

Interestingly enough, they sound better underwater when used with the provided earplugs.

Its really quite something to experience.

H2O Audio Tri 2 Pro Multi-Sport app Playlist+ feature

(Image credit: Future / James Holland)

Spending around $200 on bone conduction headphones is not unheard of.

For example, theSuunto Winghas a similar price point at $199 / 169 / AUS $319.

Of course, it doesnt have the Playlist+ feature and its sound quality is underwhelming.

H2O Audio Tri 2 Pro Multi-Sport app library

(Image credit: Future / James Holland)

However, it does offer up to 30 hours of battery life with its charging case.

There arent a lot of headphones out there that fit this niche and do it well.

This is one of them.

H2O Audio Tri 2 Pro Multi-Sport app library settings

(Image credit: Future / James Holland)

If youre limited on funds, there are cheaper alternatives out there.

I used them in various controls such as on a run and even under water.

Check out our guide tohow bone conduction headphones workfor more details.

H2O Audio Tri 2 Pro Multi-Sport over-the-ear