Over-ear stereo headphones with elegant, stylish design, energy efficient Bluetooth 4.0 technology with aptX support for audio streaming in high sound quality and active noise cancellation technology for undisturbed listening enjoyment that can be connected to suitable audio sources such as smartphones, tablets or laptops to stream individual music tracks or whole music libraries. They also provide NFC connectivity for intuitive device pairing via stroke movement on the NFC sensor, integrated microphone for practical use as a hands-free unit and call and music playback control via the function buttons at front. The Bluetooth technology provides a 10m range and supports multi-pairing function for connection of up to two devices. The high-performance lithium-ion battery enables up to 14 hours of extended listening pleasure or up to 540 hours of standby operation. In order to load music onto the device, it can easily be connected with a USB port on a laptop, for example. Moreover, the headphones can be operated in a conventional way using the jack cable included. This does not affect the internal battery but the hands-free function cannot be used in this case. The headphones provide ergonomic, foldable and lightweight design with soft imitation leather padding with moving ear pieces and an adjustable, padded headband with imitation leather which fit any type of head comfortably. Micro USB charging cable and 3.5mm audio cable are included. Frequency response: 20 Hz - 20 kHz. Audio pressure: 110 ±3 dB. Impedance: 32 Ohm. Weight: approx. 255.5 g. Black colour.