Important Note: Not compatible with Samsung series phones! It is very very useful and necessary to read the following precautions carefully before buying: If your smartphone already has 3.5 mm headphone port,we recommend you buy this adapter with caution,because it doesn't support calling,and not support use the earphone and charging at the same time.you can only use it to charge. If your smartphone has not 3.5 mm headphone port,the 2 in 1 adapter maybe suitable for you.But please make sure your phone is compatible.It is suitable for such as Huawei Nova 6. Not suitable for other,such as PC. If you are unsure whether your smartphone is compatible with this type c to aux adapter and charger, please contact us before ordering, or directly ask your question via Q&A , this will help you make the better choice. NOTE: Does NOT support data transfer,without chip. 2 in1 USB C Headphone Jack Adapter: The adapter is designed for simultaneous audio streaming and charging,and listening to music will not affect charging speed.So if your smartphone hasn't 3.5 mm headphone port,you can use the USB C + 3.5mm Audio + Charging: Listen to music with 3.5mm headphones while -charging your USB-C device. Supports Inline Headphone Control: Allows you to adjust volume and answer/end calls with your earphones’inline control. Package: 2-in-1 USB C Headphone Jack Adapter x 2.Number of Ports: 2?Ultra-portable? ?Important Note: Not compatible with Samsung series phones!No need to drive, plug and play, 2 in 1 design allows you to connect headphones and smart phones anytime, anywhere.Premium materials and intelligent design keep the adapter very linght and portable while ensuring durability. ?Charging Important Note: Not compatible with Samsung series phones!Supports charging for most USB-C devices , NOTE: If the adapter is not working, please try plugging your earphones and charging cable into the adapter BEFORE plugging the adapter into your phone. ?Compatibility Important Note: Not compatible with Samsung series phones!The 2 in 1 adapter is suitable for USB-C smartphones without 3.5mm headphone port,not suitable for other,such as PC. If you are unsure whether your smartphone is compatible with this type c to aux adapter and charger, please contact us before ordering, or directly ask your question via Q&A , this will help you make the better choice. ?Enjoy Stereo Audio Important Note: Not compatible with Samsung series phones!3.5mm Audio Adapter ensures stable, high-fidelity audio transmission and sound quality . Noise reduction and high anti-interference ability provide you with best listening experience. ?2 in 1 Headphone Adapter NOTE:Not compatible with Samsung series phones! Does NOT support data transfer,without chip. This usb c headphone can split your USB-C port into a charging compatible USB-C port and a 3.5mm audio jack,for USB-C smartphones without 3.5mm headphone jack, when it is charging, allows you to keep listening to music,playing games,calling or watching videos using it.