... factory:We specialize in the manufacture of all kinds of USB adapters and other computer, phone data cables, such as HDMI ... , AV cables, USB connectors, DB connectors, RCA jacks, hooks, etc. Our Headphone Adapter as well as other products mainly sell to North America ... the latest competitive price within the first fastest time. Universal Headphone Adapter with 2.5mm Male to 3.5mm Female