Headphone Adapter Earphone Jack Adaptor for Music and Charge Splitter Support upgrade upgraded chip-set. Charge + Listen Music + Phone Call + Volume Control + Remote Controls and Microphones. 2A Charging Speed Increase By 1.5 Times And 30%. Improve Output Efficiency And Save Charging Time, Meantime Performance Of High-Speed Stability Does Not Hurt Your Machine. 100% Copper wire core offers Nondestructive digital sound quality and ensure the stability of the transmission.