The adapter supports for iPhone, Android Type-C phones, and headphones using the commonly used 3.5mm interface/USB-C digital headphones and other audio output devices on the market Supports volume increase and decrease, play/pause, and switch to the previous/next song while listening to songs (original for Apple headphones currently only support play/pause) The adapter can charge the device while audio output or photo import and export Specifications: Operating voltage: 3.3V-4.0V Operating current: 500mA USB-C Charging port: supports charging 8-pin mobile phones and Type-C mobile phones at the same time Audio interface: 3.5mm audio port, USB-C digital headset audio port 8-pin interface: 12M/S-16M/S USB-C interface: 12M/S-20M/S 8-pin charging current: 500mA-2100mA Type-C charging current: 500mA-2100mA Compatibility: IOS 9.1 and higher devices, Android system and OTG function devices Note: The above data is measured by the development department of our company. The actual current and transmission speed vary depending on the type of device and accessories. Compatible with: Universal Package included: 1 x Adapter 1 x English and Chinese User Manual Not included other items