Features: 1. Plug and Play 2. Support digital devices with Type-C interface audio input and output 3. Compatible with Win 7/8/10, Mac OS X, iOS 10 and Android 4.0 and above operating systems 4. Using high-performance DAC digital audio decoding chip, high-fidelity restore sound quality 5. Support karaoke/wire control/call (you need to bring your own 3.5mm headset that supports wire control; both Android in-ear headphones support; IOS in-ear headphones support play/pause/cut songs, but do not support volume adjustment) 6. Single crystal copper wire, good conductivity Product Specifications: 1. Supported standards: OMTP (national standard)/CTIA (American standard) headset automatic switching 2. Decoding chip: Realtek ALC5686 3. Wire core material: 8 strands (144 cores) high-resolution single crystal copper wire 4. Shell material: one-piece aluminum alloy sandblasting + anodizing 5. Product length: 12.5mm+/-0.5mm 6. Product weight: 8g 7. DAC sampling rate: 32bits/384KHz 8. Signal-to-noise ratio/SNR: greater than 125dB

http://olla.gr/ta12-r2-usb-c-type-c-male-to-3.5mm-audio-female-single-crystal-copper-braid-earphone-adapter-grey-el/