This is an open-ear Bluetooth headset that allows you to hear the surrounding sounds. Unlike bone conduction types, it has less vibration, making it comfortable to wear for long periods. These are air conduction earphones. You can listen without blocking your ears, so you can hear the surrounding sounds and feel safe. It can be used for music while running or doing housework, as well as for calls at construction sites, etc. It's designed to minimize sound leakage, which is common with open-ear types. It is equipped with a noise-canceling function to reduce surrounding noise during calls. The external microphone is detachable with a magnet, and you can make clear calls by bringing the microphone close to your mouth. Suitable for use at home, telework web conferences, Zoom meetings, and calls on-site. *When removing the external microphone, please attach the microphone terminal cover. It operates with physical buttons, so there are fewer accidental operations. IPX5 waterproof design, resistant to sweat and rain. Designed to be used with glasses and masks. Since it doesn't block your ears, your ears won't get stuffy even when you move around, providing comfort. It is equipped with a large-capacity battery that allows for up to 10 hours of talk time. It can be charged with the included USB Type-C cable. This is a Bluetooth earphone with noise canceling for online meetings. It's high-performance, but I couldn't use it at work, so I'm selling it. I only took it out and tried it once. Sanwa Direct Open Ear Earphones Headset with Microphone Bluetooth 5.3 Air Conduction Waterproof IPX5 Noise Canceling Up to 10 Hours USB-C Charging Does Not Block Ears Wireless Running 400-BTSH027