Limited price reduction until Sunday. I purchased two for work, and I'm selling this one because I'm using the other. I only tried it on once with a knit cap on. It's unused, but I have touched it, so please refrain from purchasing if you are concerned. [Bone Conduction Technology] These earphones use bone conduction technology, allowing you to enjoy music without blocking your ears. You can listen to music or make calls while hearing the surrounding sounds. [Comfortable Fit] Lightweight design for comfortable wear even for long periods. Perfect for exercise or everyday use. - Accessories: Charging cable, earplugs, instruction manual - Type: Bone conduction earphones - Color: Black Thank you for viewing.