Wireless, 16-bit, CD-quality sound. Uninterruptible signal. Unbeatable range and battery life. Sync up to four pairs of headphones to just one transmitter. A patented just-in-case auxiliary cable. Legendary AKG® build quality and renowned acoustics.

The K 840 headphones use advanced Kleer® wireless technology to stream CD-quality audio wirelessly from your iPod, iPhone, BlackBerry – any portable music player. Unlike wireless technologies that compress the sound, significantly degrading quality, the Kleer technology delivers pure, uncompressed 16-bit stereo audio over a robust 2.4GHz radio link, providing a quality of acoustical reproduction simply unavailable in other wireless headphones.

A continuous-use battery life of 28 hours between charges and a standby battery life of up to six months mean you will never be let down by your equipment. And with an industry-leading operating range of more than 65 feet, the K 840s connect to your favorite portable device from your pocket, backpack, briefcase – virtually anywhere –Kleer and interruption-free.

Every detail of the K 840s has been painstakingly designed to ensure you get studio-quality sound, wherever you may roam. Supersoft ear pads and a compact, lightweight design combine with the patented AKG® 3-D Axis folding mechanism, enabling you to enjoy your favorite music in total comfort. These 3-D Axis – equipped headphones fold away flat and come with a hard-carrying case for added portability.

The K 840s let you raise or lower volume right on the external ear cup. A closed-back design not only makes the K 840s incredibly comfortable to wear, it provides passive noise reduction, improving sound quality so that you are free to focus on the music, not the noise.