... for light source, 1-year replacement for power source. 5. 2700-4000K, 4000-6000K, 6000-7000K optional. 6. Patented quadric ... , rings, and nuts, including the bracket, are made from high quality A4 316 stainless steel. 10. A special ventilating gland is ... heat dissipation technology for radiator. 14. Toughened glass for light protection; both matt and clear glass available. 15. Closed corrosion- ...