Work for 4.4mm equipment, .4mm Male to 3.5mm Female, allows you connect headphones to audio devices. Made of Oxygen-free Copper Wire, ensuring the perfect transmission of the audio signal, depth and r more→esolution. To reduces the possibility of wire oxidation and accurately music details. Gold Plated Pure Adapter, the transmission and resolution of the sound are from interference, which in delivering lossless sound quality. Handy and portable, widely work with earphone, headphone, and home audio equipment, such as amplifiers, mixing console, Home theater devices, or AV receivers, karaoke system and etc. Straight and Bent plug available, grip treads help easy plugging and unplugging. Material: tinned …