I'll start by saying I have two pairs of aftershokz titanium break in the same place before I bought these. The aftershokz headphones suit my use, fit cycling they allow me to listen to music and hear the world around me. The sound quality is good, it will never be as good as a set of enclosed headphones, but fit what I use them for acceptable.
The treks air are light weight, comfortable and the battery life surprising coinciding their size.
I do hope these airs last longer than the titanium ones over previously killed-only time will tell.
AfterShokz Trekz Air Open Ear Wireless Bone Conduction Headphones, Slate Grey, AS650SG