Shokz OpenRun Pro S810, Blue Bone conduction headphones. Used for about six months, used while walking. I'm selling these because I bought OpenDots ONE from the same manufacturer and probably won't use these anymore. They work perfectly, I think. Includes: main unit, outer box, dedicated USB charging cable, dedicated case, and instruction manual. Shipping will be via anonymous Rakuraku Mercari delivery, 60 size, and will be shipped from a convenience store.