This is a defective item (microphone does not work properly). The cause is unknown. Audio can be heard without any problems. Wireless, with noise-canceling function. The purchase price was around 23,000 yen. Accessories include: Charging stand Charging cable Portable case USB receiver You can check the product information here: https://www.amazon.co.jp/gp/aw/d/B013F4LLZ0?psc=1&ref=ppx_pop_mob_b_asin_title