Featuresr dodocool 3 port 24a21a21ausb car charger with 3 independent usb controller ic compatible with wide range of electronic devicesr intelligent frequency conversion match the best current automaticallyr allow three devices charging at the same timer pure copper contact perfect conductive performance high speed chargingr easy to see led confirms whether devices finish chargingr seamless integration design fire protection shell and shockproofr the car charger is made of alum