B1G1 at an already good price direct from Aftershokz:
https://twitter.com/AfterShokz/st…0448496640
Still up as of now, max 1000 orders.
These are bone conduction headphones and are not a good fit for everyone. Take a look at bone conduction technology and Amazon reviews for more info:
https://www.theverge.co
https://www.amazon.com/AfterShokz…01