Product Name: "B39 Pro Wireless Hifi Stereo Headset" This headset can be used both wirelessly and wired. I bought it as a headset for my child, but they didn't like the look of it, so it hasn't been used. The box has only been opened. I can send it without the box if you don't need it. The size is adjustable, so adults can use it without any problems. You can also make the lights shine while using it. It supports Bluetooth 5.3, allowing for wireless connection. It has a built-in 400mAh large-capacity battery, allowing for approximately 15 hours of music playback with the lights off. It can be charged with the included micro USB cable. It also supports wired connection and playback via TF card (microSD card).