Wireless bone conduction headphones, Shokz OpenRun Pro. Purchased approximately 2 years ago. Used mainly for work and commuting. Shows some signs of use. Has not been dropped. Selling because I purchased the OpenRun Pro 2. Functioned normally until just recently. For those who understand that this is a used item, or for those who want to try bone conduction headphones, how about it? Thank you very much. Series: OPENRUN PRO