Sony has launched new noise canceling headphones called the MDR-NC11. NC11 is available in black and white color and supplied with three different sizes of earpiece, noise-canceling On/Off switch and volume control on the battery box. They are equipped with 9mm driver units. NC11 analyze the ambient sound around you and send an inverted audio signal through the headphones. MDRNC11 comes with replaceable silicon rubber tips in three sizes (small, medium and large). They weight 47g (including battery box, cord and battery).