This is the KENWOOD KH-M700-B. It's a KENWOOD wireless single-ear headset with noise-canceling function. - High-quality call function that transmits voices clearly during online meetings, etc., for telework Equipped with two high-performance MEMS microphones for calls, it suppresses ambient noise and enables clear hands-free calls. It provides comfortable voice communication during online meetings, etc., for telework. - Active noise cancellation function for receiving calls The voice of the caller can be heard clearly even in environments where ambient noise is a concern. - Stable wireless connection with less voice interruption It adopts Bluetooth® standard Ver. 5.0/Power Class 1, realizing a stable wireless connection. - Multi-point support, allowing simultaneous connection to two devices It supports multi-point, which allows simultaneous connection to two devices, so you can use it without having to switch Bluetooth® connection settings when having online meetings on your computer and making phone calls on your smartphone. - High-quality sound with clear calls A 10.4mm high-power neodymium driver unit reproduces a balanced sound from low to high frequencies. The caller's voice can also be heard clearly. - Approximately 7 hours of continuous talk time It allows approximately 7 hours of continuous talk time. It also supports a continuous standby time of approximately one week (approximately 164 hours). - Waterproof for everyday use, so you don't have to worry about rain or splashes - Includes two types of ear tips to choose from In addition to the standard ear tips, it comes with support ear tips that provide a stable fit, allowing you to choose your preferred wearing style. - Symmetrical shape that can be worn on either ear I've used it 3-4 times, but it didn't fit, so I'm selling it. Rakuraku Mercari Delivery 3N (No returns, no refunds, no exchanges) Thank you.