Wireless Headphones - with microphone, headset, ear, semi-closed construction, Bluetooth 5.0, supports SBC, taking calls, converter: 30mm, battery life of up to 12 hr(s) Enjoy listening to your favourite music without cables. The Koss wireless headphones have the common over-ear design. They sit comfortably over the ears, but they still have quite a compact design. Their semi-closed construction will guarantee perfect, clean sound, which sounds spectacular. The KOSS BT/330i, Black Wireless Headphones use Bluetooth technology for wireless connection to your device. Say goodbye to annoying cables. These wireless headphones even include a microphone. These wireless headphones from Koss are made with 5.0 Bluetooth technology. This model can even pick up phone calls. A fully charged battery will be able to last 12 hr(s). KOSS BT/330i, Black Wireless Headphones Key Features Material of these wireless headphones from KOSS BT/330i, Black: semi-closed Beautiful black...