NTT nwm MBE001 Dark Brown Open-Ear True Wireless Ear Speakers Although they are open-ear, they are said to have minimal sound leakage thanks to proprietary technology. The microphone's noise cancellation is also powerful, and my voice was reaching the other party without any problems during web conferences on the station platform. Recommended for those who dislike in-ear types or headphones. Easy to use in the office. Since they don't completely block your ears, I think they're also suitable for cycling. Only the earphones themselves and the charging case are included in the listing. Operation confirmed and disinfected immediately before listing. Please review my profile before considering a purchase. The following are search keywords: Earphones Noise Canceling Nuum Equipped with NTT's sound leakage suppression PSZ technology Equipped with proprietary PSZ (Personalized Sound Zone) technology. Suppresses "sound leakage," a weakness of open-ear headphones, allowing those around you to be comfortable.