Enjoy listening to your favourite music without annoying cables. These Koss wireless headphones have the common compact and very discreet plug design. Their semi-closed design boasts clean sound, which sounds spectacular. These Koss The Plug Wireless Wireless Headphones are made with Bluetooth for wireless connection to your device. Say goodbye to cables. With a frequency ranging 10 to 20000 Hz, you will know that you won't miss a single note of your favourite song. The wireless headphones also have a microphone. These wireless headphones from Koss have 4.2 Bluetooth technology. The volume of your music can be adjusted with the control wheel. This model can even receive your calls. Songs can be switched easily and quickly using the controller on the headphones. You can easily replace the earplugs if needed. The battery life is 6 hr(s).