Wireless Headphones - with microphone, headset, ear, closed construction, 3,5mm Jack, Bluetooth 4.2, track shuffle, taking calls, with volume control, frequency range: 20 Hz-20000 Hz, sensitivity: 108 dB/mW, impedance: 32 Ohm, converter: 40mm, battery life of up to 8 hr(s) Enjoy listening to music without annoying cables. These Swissten wireless headphones have an over-ear design. They sit comfortably over the ears, but they still have quite a compact design. Their ear-covering design ensures amazing insulation from background noise. These Swissten Trix Black Wireless Headphones utilize Bluetooth technology for wireless connection to your device. Say goodbye to bothersome cables. With a frequency range of 20 to 20000 Hz, you will rest assured knowing that you won't miss a single note of your favourite song.   These wireless headphones even include an integrated microphone. These wireless headphones from Swissten use 4.2 Bluetooth. The volume of your music can...