Comfortable with Bluetooth!! It's a better product than I imagined! The size is suitable for women, and it might be tight for men with larger faces!! Shokz (formerly AfterShokz) Aeropex AS800 Bone Conduction Wireless Earphones With bone conduction technology that doesn't block your ears, you can enjoy music while still hearing the surrounding sounds, making it perfect for running, commuting, and going to school. Lightweight and Comfortable: The main body is very lightweight and robustly designed. It's comfortable to wear for long periods without getting tired. Beautiful Condition & Works Well: It's in beautiful condition with no major scratches or stains. I've handled it with care, so there's almost no battery degradation, and you can still use it for a long time. Operation has been confirmed. Includes: Main unit Dedicated charging cable Carrying case [Other] We are looking forward to your purchase if you understand that this is a used item. Instant purchase is OK. Price negotiations are also welcome. Please feel free to contact us. ※Notes Please understand that this is a used item.