The cover is made of high-quality Sus304, which is of high intensity and fast-cooling quality. The head is made of 5mm-thick tempered glass, and there is a 12mm silicon pad between to make the whole light water-proof. (IP68) LED bulbs are imported famous brand (180PCS), the electricity-light transforming efficiency is 6 times higher than conventional bulbs. LED lights are also with rich and accurate colors. The power is 24-V, which is very safe to use.