I am selling this because I purchased several and won't be using this one. I only used it once to test it out. 【 Specifications 】 ■ Connector Type: USB Type-C(TM) plug - 3.5mm 3-pole/4-pole stereo mini-jack ■ Compatible Devices: Smartphones and tablets that support audio output from the USB Type-C(TM) port (supports both analog and digital output from the device) ■ Color: Black ■ Package Type: Paper box ■ Environmental Considerations: Compliant with EU RoHS Directive (10 substances) 【 Description 】 ■ This is an audio conversion adapter that converts the audio output-compatible USB Type-C(TM) port on a smartphone/tablet to a 3.5mm stereo mini-jack. ■ *This product cannot be used with devices whose USB Type-C(TM) port does not support audio output. ■ *If audio output problems occur, please restart the device. ■ Cable-less design eliminates the worry of disconnection. ■ Compact size for convenient storage and portability. ■ Equipped with a DAC that supports up to 48kHz/16bit. ■ The built-in DAC supports both digital and analog signals. ■ No drivers are required; simply connect the devices to use. ■ Compatible with both 3.5mm 4-pole and 3.5mm 3-pole stereo mini-plugs (CTIA standard). ■ Compatible with earphones with a microphone, allowing for both music listening and calls. ■ This is an environmentally friendly product compliant with the EU's "RoHS Directive (Restriction of Hazardous Substances in Electrical and Electronic Equipment)" (10 substances).