The plug is gold-plated, with good contact performance and is not easy to oxidize The metal shell is electroplated, beautiful and , and anti-interference. The wire is made of all-copper conductors and double-layered shielding, which can effectively resist interference, reduce noise, and provide high-fidelity sound quality. 3.5mm plug with thread locking. Compatible with for BMPCC for C-series cameras Product Usage: Can be used for BMPCC series cameras with mini XLR microphone interface, for C70 camera, connect wireless microphone receiver, for example: for C70 camera is connected with UWP-D21 wireless microphone receiver. Product material: 3.5mm plug: copper gold plated, copper plated black shell MINI Plug: Gold-plated contacts, gold-plated copper front, pearl-nickel-plated copper rear Wire: 24AWG all-copper conductor, with aluminum foil + copper wire winding shield + fiber protection outer net Wire outer diameter: 5.0MM Colour:black+gold+silver Material:Braided mesh + gold plating + copper wire Size:Length: about 30cm Package Contents: 4 x Audio Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.