List of material : 2,5" fullrange speaker : http://bit.ly/2FaREAs4.5inch 4Ohm 50W Woofer Speaker: http://bit.ly/2U1ZovOAiyima Ampli Bluetooth TPA3116 D2 2.1: http://bit.ly/2Qfjd1I3S protect board : http://bit.ly/2wZMPcr