Wireless Bluetooth 4.1 headphones with active noise reduction that eliminates up to 85% more annoying background noise such as engine noise from airplanes, buses or subways, and can be turned on and off. They are equipped with the CSR8645 with apt-X, a newest generation Bluetooth 4.1 chipset. With a range of up to 10 metres, all Bluetooth-enabled devices can transmit their sound to the headphones completely wirelessly. There is also a microphone in the headphones that can work with any iPhone, Android or smartphone for full hands-free calling. Via three small buttons, both the playback devices and the phone can be controlled. An additional 3.5mm jack audio cable allows user to connect at any time with older devices without a Bluetooth function. The ear cushions are very soft and gently adapt themselves to the shape of any ear. They reduce noise via a two-way system: ambient noise from the outside is attenuated, while the sound of the speakers is prevented from permeating to the outside. This allows user to enjoy music, movies, podcasts and more without disturbing those around him. In addition, the extendable headband is pleasantly padded and can be adapted to almost any head size or shape. The headphones work with virtually any modern audio equipment, including iPhones, iPads, smartphones, tablets, computers, DVD players, stereos or TVs. Since not every device has a 3.5mm stereo jack, the headphones come with a 6.3mm jack adapter and a dual plug adapter for airplanes. For safe and easy transport, the headphones come with a hard case that can accommodate the headphones and also features a small pocket inside for the detachable audio cable, micro-USB charging cable and the adapter plug. Impedance: 32 Ω. Power: 100 mW. Distortion: <1%. Frequency range noise filter: 70-1200 Hz. Weight (headphones): 200 g.