I used these a couple of times after purchasing them, but the fit wasn't right for me, so I've been storing them. Two spare ear tips are also included. ■ Hear While You Hear Earphones that fit into your daily life Ear cuff type that doesn't block your ears. Because they don't go in your ears, your favorite background music naturally overlaps with the sounds around you. For those who want to enjoy their favorite music comfortably while still catching important sounds and conversations, such as approaching cars, station announcements, and incoming phone calls. The structure that doesn't block outside sounds eliminates the feeling of blockage, creating a new and mysterious music experience, as if there were an invisible speaker somewhere. ■ New listening comfort with the ear cuff type that doesn't go in your ears The ear cuff type that doesn't block outside sounds eliminates the feeling of blockage, creating a new music experience as if a speaker that only you can hear is close to your ears. Utilizing a unique structure and Sony's acoustic technology, it controls the directivity of sound while using air conduction, the same as a speaker, so there's no need to worry about sound leakage.