Charge&Audio: This adapter allows you listen to music with one splitter while charging your device with the other splitter port. 4 in 1 FUCTION: This splitter has 2 Lightning Port, one port is for Charging, another is an audio port. the charging port is jsut for charging, and the audio port can be used for listening to music and calling, also it is wire control, you can control the music and calling though the earphones,MINI & PORTABLE: The dual lightning adapter is very small,light and compact.You can put it in your bag, wallet, briefcase or pocket so you can carry it around. Listen and charge your phone at the same time will not be a problem anymore! When you want to listen to music and charge at the same time, just insert the earphone and plug into the charger.Do not transfer support data,Please use your original charger and headphone,listen to music and charge at the same time,High quality and reliability.