Wireless Headphones Sony WH-XB700 Black:Enjoy listening to your favourite music without annoying cables. These SONY wireless headphones have the over-ear design. They sit comfortably over your ears, but they still have quite a compact design. Their ear-covering design ensures incredible insulation against background noise. These Sony WH-XB700 Black Wireless Headphones use Bluetooth technology to connect to your devices. Say goodbye to bothersome cables. Easy and simple connecting with other devices is enabled with NFC technology. With a frequency range of 20 to 20000 Hz, you can be sure that you wont miss a single note of your favourite song.   The headphones also have a microphone built-in. These wireless headphones from SONY are made with 4.2 Bluetooth. A fully charged battery will be able to last 30 hr(s). Sony WH-XB700 Black Wireless Headphones Key Features Material of these wireless headphones by Sony WH-XB700 Black: closed Stylish black colour Connection method is 3,5 mm Jack and Bluetooth The cable is plugged into one side, into only one side NFC interface for fast synchronisation Wire-free connecting with Bluetooth gives you true freedom Weight of SONY wireless headphones: 195 g Full-charge battery life: 30 hr(s) The SONY wireless headphones also have a handy microphone Every user will love the buit-in microphone. The microphone on these SONY wireless headphones guarantees uninterrupted voice calling with family or friends. It is built directly into the headphones.