3-in-1 adapter, one adapter can support two plug headphones while charging while listening to songs3-in-1 Smart chip eliminates noise, max. charging current 2.0AMade of aluminum alloy, it is more resistant to oxidation and corrosion. Material ABC+Aluminum alloy Technology Sandblasting + oxidation + laser carving Color Black/Silver-black/Red black/Blush-gold Current 2.0Max. Suitable For iP devices