New, unopened, authentic Shokz OpenRun Pro 2 Mini bone conduction earphones purchased this month at a major electronics retailer. Warranty and receipt included. This is the latest model, shipped on December 19th. Black is also available, so please comment if you would like me to list it. This price is only good for today. Since I just bought it, the warranty is valid for 2 years. It's a new product and still expensive, but I'm selling it at a bargain price because I don't need it. Shokz Wireless Bone Conduction Earphones IP55 Up to 12 hours USB-C OpenRun Pro2 Mini Suguru Osako Model SKZ-EP-000049 White Brand: The receipt is a detailed statement that can be used for warranty purposes. There are people who request it for suspicious purposes such as expense reports, and formal documents like those with a specific name on them don't exist in the original form these days. I can provide an image, but I don't have a PDF, so you will need to create one yourself. This is the system used by all companies now, so it will work without any problems. I had an unreasonable complaint from someone who didn't understand this explanation the other day, so I ask that only reasonable people purchase this item.