The technology that has been implied in this headphone will reduce the outdoor noise (ie) the noise from planes, trains,buses and any sort of outdoor noise will be filtered and we can get a hi-fi audio experience.
Sony claims that the outdoor ambient noise can be filtered to 99% which is just less than ultimate perfection. The digital noise reducing engine has three filters located in the built-in digital signal processor, which can be tuned to the outdoor noise environments effectively.It can reduce 99%
of ambient noise at 160Hz.
Battery which this phone uses is a internal lithium-ion battery which lasts for 16 hours. There is also a provision for two AA batteries in the absence of a wall plug. The headphone cost is $400. So buy this headphone and enjoy the ultimate digital audio experience.