These are without a doubt the best bone conduction headphones
(Android Central)

An improvement in every possible way, but maybe not enough to upgrade. Bone conduction headphones are the kind of thing you only need to try once to know you love them. I know so many different kinds of people who rely on them every day, from massage therapists who want to catch an audiobook while working with clients to full marathon runners who want to hear a car as it passes by. These headphones are a curiosity to those who don`t understand how you can hear things without having them in your ear, but try them once and there`s a good chance you`re hooked. I usually recommend the Aftershokz Trekz Titanium headphones when someone asks me which bone conduction headphones to get, or if you know you only want these headphones outside, I suggest the special sunglasses we`ve seen recently. But after spending the last month with the latest offering from Aftershokz, my recommendation without hesitation will be these new Trekz Air headphones. Audio everywhere Aftershokz Trekz Air ...