Buffalo USB Type-C to 3.5mm 3-pole/4-pole Audio Conversion Adapter I used this once and am selling it because I'm using a different type. USB Type-C to 3.5mm (3-pole/4-pole) Stereo Mini Plug High-Resolution Audio Conversion Adapter [Compatible with both 3-pole/4-pole] Not only for music playback with earphones and headphones, but also compatible with earphones and headsets with microphone and in-line controller functions. [High Durability] Achieves high durability, passing a 30,000-cycle bend test. [Supports High-Resolution Audio] Equipped with a high-resolution DAC, allowing you to enjoy music in high-quality sound. [Convenient to Carry] Compact aluminum mold and a short cable of about 6cm, making it convenient for use on the go. [Compatible Devices] ■USB Type-C port equipped devices: iPad / Mac / Android smartphones / Android tablets / Computers ■3.5mm (3-pole or 4-pole) stereo mini-plug equipped devices: Earphones / Headphones / Headsets