Wireless Headphones - with microphone, earplugs, closed construction, Bluetooth, taking calls, with volume control, frequency range: 20 Hz-20000 Hz, sensitivity: 106 dB/mW, impedance: 16 Ohm, converter: 8mm Enjoy listening to your favourite music without annoying cables. These Superlux wireless headphones have the popular compact and very discreet plug design. Their ear-covering design guarantees incredible insulation against background noise. These SUPERLUX HDB311 BLACK Wireless Headphones use Bluetooth for wireless connection to your devices. Say goodbye to bothersome cables. Using a frequency range of 20 to 20000 Hz, you will rest assured knowing that you won't miss a single beat of your favourite song.   These wireless headphones are also equipped with a microphone built-in. The volume of music or videos can be adjusted with the control wheel. This model can even pick up phone calls. You can easily replace the earplugs if needed. The package also includes a...