Raw Materials:Anti-UV Bulbs(Philips Quarts), Electrode of Sweden and Molybdenum, Pills of USA, Xenon of Germany, 99.999999% pure mercury Output: 35W,55W Luminous Flux: 3200 lumens,3 times than popular halogen Color Temperature: 3000k,4300k,6000k,8000k,10000k,12000k,(25000K Blue),(25000K Purple) Color: Golden, Sunlight, skyblue, Cambridgeblue, Darkblue, Green, Pink Lifetime: >3200 hrs Advantage: High brighter, low consumption. 52*36*26 50pairs 0.2kg 11kg.