Bluetooth headset HSP-BX Wireless Headset This is a single-ear earphone microphone that rotates and can be used on either the left or right ear. I purchased it and stored it in its dedicated case for about two years without using it. I don't plan to use it in the future, so I'm offering it for sale in the hope that someone will find it useful. Although it is unused, I charged it to full capacity and tested its operation before listing it. I paired it with an old smartphone (OPPO RENO A) and was able to make calls without any problems. I couldn't find the instruction manual, so I will include a printed English manual for a similar product from the web. I'm not sure if a charging cable (miniUSB) was originally included, so I will include a cable I have on hand. Although it is an unused item that was only tested, please understand that it has been stored at home for a long time before purchasing.