I purchased this a year ago and used it for work, but I'm selling it because I no longer need it due to a job change. It has been disinfected with alcohol. Original price: 11,500 yen The following is the product description from Amazon: Brand: Anker Color: Navy Headphone Type: Over-Ear Connectivity Technology: Wireless Material: Plastic Item Weight: 184 grams Anker's first wireless headset: With excellent voice processing technology and long talk time, it smoothly and comfortably supports online communication, such as remote meetings. AI Noise Reduction Function: Equipped with VoiceShield technology, which uses AI to recognize ambient noise and your voice, removing noise while amplifying the human voice. It delivers clear audio and enables stress-free calls. Active Noise Canceling (ANC): Detects surrounding noise and removes it with active noise canceling (ANC). You can concentrate on work or meetings, or enjoy music without worrying about the surrounding sounds. Up to 24 hours of long talk time: A full charge allows for up to 24 hours of talk time and up to 35 hours of music playback. Also, a 5-minute charge provides approximately 3 hours of talk time.