I purchased these on Amazon but they didn't fit my ears, so I'm selling them. They've only been tried on (?). Includes instruction manual. Warranty is not included because I didn't register on LINE after purchase. Brand: DitanLink Wireless Bluetooth Earphones "New Design Ear-Hook Bluetooth Earphones" Bone Conduction Innovation, Air Conduction, Comfortable Fit, Running, AAC Compatible, Doesn't Block Ears / 3D Audio / ENC Call Noise Cancellation / 48 Hours Continuous Playback / Type-C Fast Charging / IPX7 Waterproof, for Commuting / Sports / Web Conferences Charging Cable: USB Type Case Design: Round Charging Port: USB-C Retail Price: ¥3980 Color: Silver Thank you for viewing. *If you are interested in this product, please read the shop profile and agree to the contents before purchasing. Please understand that this is a used item. If you are concerned about minor details, please refrain from purchasing. Also, please note that I am also selling on other sites, so I may suddenly delete the listing.