... 1.5-inch mid-tweeter and one 4-inch subwoofer, together with super-low frequency radiator.Super function: NFCMobile phone close ... can be used independently, but also can be used with two together. With Bluetooth twins connection design, you can connect TV, ... metal body, non-corrosive and don’t fadeABS plastic with wood processing on surfacePerfect joint for whole structureCertificationCCC,CE,ROHS ...