It has a flexible TPE deal with on high, silicone bumpers throughout the edges and ABS+Polycarbonate exterior and grill. The IP65 ranking Furthermore marks it being a resilient system in most environments. 6-inch tweeter plus a passive radiator fires sound out the front and it mirrored within the back https://www.bluetoothspeaker.top/waterproof-speaker-outdoor-subwoofer-bass-wireless-bluetooth-speakers/