New, Unopened / Purchased for 2499 yen Purchased on Amazon in September 2525, but listing because a friend gave me the same item. - The following is a description from the website - 【100 Hours of Continuous Operation & LED Battery Level Display】Compared to the previous version, the Bluetooth system and battery life have been improved. With a 1.5-hour full charge, you can get approximately 10-12 hours of talk time and about 10-12 hours of continuous music playback. In addition, to prevent the loss of the earphones, a 500mAh charging and storage case is included, which can fully charge the earphones about 5-7 times. 【Dedicated Hands-Free Call Microphone & Mute Function】The Bluetooth headset is equipped with a unidirectional microphone and CVC8.0 noise-canceling function, which accurately picks up your voice and blocks out surrounding noise, enabling clearer calls, and delivering clear audio to the other party even in noisy places. In addition, to protect personal privacy, a mute function is also included. During a call, pressing the "MFB key" will prevent the other party from hearing your voice, which is convenient when handling confidential information, such as during a meeting. Furthermore, it can connect to two devices simultaneously, allowing you to separate your personal and work life, and it's very convenient as it can handle both phones. 【Ergonomic Design & Compatible with Both Ears】The Bluetooth earphones are designed with an ergonomic 12g ultra-lightweight design, making them comfortable to wear and less likely to cause ear fatigue. They adopt an in-ear design, and the design that fixes them deeper in the ear and supports them at three points makes them less likely to fall out of the ear than other types, allowing you to easily make calls even in crowded trains. Three sizes of replacement ear tips are included, allowing you to choose according to your ear size (S, M, L). The ear hook is extendable (the extendable part can rotate 270°) and the microphone boom can rotate 180° up and down. This single-ear earphone fits both left and right ears, can be comfortably worn on either ear, and allows you to enjoy calls and music playback.