Housing: Stainless steel cover, tempered glass lens, high temperature gasket, high-power led Item No. HW-SDL05 Voltage 12-24v Power 18w Led qty: 18 Size: 21*21*13cm Protection IP68 Color: Red, yellow, green, blue, white, rgb are available,rgb can be controlled by DMX. Certificate: CE and ISO9000-2000 Usage: Swimming pool, spa, fountain, trees, building, etc. Features: Long lifetime, low-energy efficient, high lighting inensity