【Bluedio Vector Flow Technology】: Faith 2 has a unique design wherein a ventilated back chamber in each ear cup of the headphone can propel air out and equalize air pressure on both sides of the headphone ear cans. This results in enhanced bass reproduction and an unparalleled sound fidelity. 【ANC technology】: Faith 2 adopts an advanced Active Noise Cancelling technology algorithm, which continuously measures surrounding white noise, compares and reacts it by canceling it with the opposite frequency signal, to bring you crystal-clear sound with exceptional noise canceling. 【Oval over-ear design】: Faith 2 comes with state of design with premium materials and oval ear cups that nicely sit around your ears. The result is a great looking headphones with exceptional comfort. You can wear the headphones for hours and not worry about any fatigue.