Product material: The plug is gold-plated, the wire is TPE, the outer woven fiber mesh, and the conductor is copper wire. The shell is aluminum alloy Features: Using copper core conductor, no loss of sound quality. The wire is protected by a braided mesh, which is effectively tensile, pressure-resistant and dirt-resistant. The shell is made of aluminum alloy oxidation, which does not fade, and the appearance is high-end and beautiful. The copper material of the plug is gold-plated, which has good transmission performance, low transmission loss, and is not easy to oxidize and decolorize for a long time. Product Usage: Used for mobile phones, tablets, laptops, MP3/mp4 and other devices to connect to power amplifiers or active speakers with RCA input interfaces. Can connect mobile phone tablet with 3.5mm interface to active speaker with RCA interface, power amplifier. You can also connect the audio player with RCA interface to the desktop speaker with 3.5mm interface, power amplifier. Support bidirectional transmission, regardless of positive or negative. Type:AUX Cables Connector B:RCA Connector B:AUX Gender:Male-Male Model Number:3.5 jack to 2 RCA audio cable Shielding:Braid color:Blue Material:Gold plating+TPE+fiber mesh+copper wire+aluminum alloy size: length about 1.8m Package Contents: 2 x Audio cable