Thank you for viewing! [Bone Conduction Bluetooth Earphones] Model Number: X11S Bluetooth Version: 5.4 Communication Distance: 10m or more Waterproof Performance: IPX8 Battery Capacity: 150mAh Full Charge: Approximately 1.5 hours Weight: Approximately 24g Memory Capacity: 32GB Comes with a dedicated case! Used only 4-5 times after purchase, with minimal signs of use. I am selling it because I no longer have the opportunity to use it. There are no noticeable stains or scratches, but please check the photos just in case. Please understand that this is a used item and has been stored at home. We kindly request no returns or claims. #BoneConductionEarphones