Specification: Item Type: Audio Adapter_x000D_Wire Material: Copper Plated With Silver_x000D_Wire Core Material: Silver Plated Copper Wire_x000D_Wire Outer Diameter: Approx. 4.0mm/0.2in_x000D_Length of Wire: Approx. 16cm/6.3in_x000D_Product Plug: 2.5mm Male to 3.5mm Female Features: 1Convenient to Use: Many phones don't use standard headphone jacks, forcing you to use their original headphones. Using this audio adapter allows you to use 3.5mm headphones on 2.5mm devices. 2Converter Function: You can use this converter to use 3.5mm audio cable on 2.5mm devices. 2.5mm male to 3.5mm female adapter. 2.5mm balanced plug to 3.5mm stereo interface 3Please Note: For audio and music output only, the audio input is not available (cannot be used for communication). Perfect for listening to music using universal 3.5mm headphones, speakers, etc. 4Superior Sound Quality: Silver plated copper wire with gold plated plug brings high resolution sound. Clean natural pure audio sound with realistic and clear jitter free stereo format signal. 5High Resolution: Twisted twisted pair cables twist hot and cold signal lines against each other to offset magnetic flux caused by current and reduce signal transmission losses. High resolution sound with a sense of presence. 6Premium Material and Compact Size: This audio converter is made of high quality silver plated copper for durability. Small size and light weight, easy to carry and use when going out. PackageList: 1 x Audio Adapter