Used a few times. There are no issues with its use, but I'm selling it because I have duplicates at the office. I have the original box, so I will ship it in the box. I'll also include the included USB charging cable. It supports multi-connection and can pair with two devices. It's not bone conduction; it uses air vibration near the ear... in other words, it's a normal type that produces sound, so you can hear the surrounding sounds, and those who don't like bone conduction should be able to use it without any problems. Bluetooth 5.3 compatible wireless headset for calls, with noise-canceling function. - Brand: Earaku - Model: Wireless Headset - Bluetooth Version: BT 5.3 Thank you for looking.