This is a junk wireless earphone. It's not bone conduction, but it's the type that doesn't block your ears, and it was convenient to use. However, after a few months of use, as shown in the photo, one of the charging pins for the left (R) side has receded, and it sometimes doesn't charge. (The right (L) side charges for now.) (It's also strange that L is placed on the right and R on the left.) If it could charge, the earphones themselves worked fine. You can buy it immediately without comments. Please consider it as a junk item. - Brand: Enhau - Model: S13 - Accessories: Charging cable, instruction manual - Color: Black - Condition: Minor scratches - LED indicator: Blue - Junk item