I love being able to listen to something while still hearing what's going on in my environment. I have the Open Run MINI. I only wish it were smaller or adjustable . When I lean my head against anything, it moves away from my head and I can't hear as well.
Good set of headphones for my uses (music while working/exercising, audiobooks). I have a skullcandy over-ear set which of course has better sound quality, but the Shokz are far more comfortable and portable, less sweaty, and have been getting more use. Like other reviewers, I don't think there's much or any bone conduction going on; it's directed/focused sound. Whatever it is, it does the job well enough. I wish these were available in more sizes; the small size is still a bit too large for me, and I'm sure that the sound quality would be improved with a better fit.
When I wear other devices, it sounds like my fingers are stuck in my ears. I can't think like that! My thoughts get weird and I hate not hearing things right. Kinda like when I flew a plane and my ears stopped up for 2 weeks! I like these, although after a long-time wear you do feel a little pressure where they rested on both sides. But it's far better than dealing with the other. I was amazed how well the sound quality was. It was better than I thought it would be. Are they are a good investment? YES!!
I love the quality of the sound, but they are very heavy and put pressure in front of my ears, which usually results in a headache if I wear them longer than an hour. The range is not great. If I'm on a phone call and walk into another room without taking the phone, I lose my connection. I had to take a picture of the instructions, because I could never remember how many times I had to click on the main button to do what I needed.