specifications: power: 5w/7w/9w/11w/13w18w/24w/36w/55w diameter: 12-13mm, 20-21mm base: g23, 2g11 color temperature: 2700k-14000k features: 1.emit light spectrum at 253.7nm, which causes the dna damage and bacterial death or change 2.can kill a variety of microorganisms, including viruses, bacteria (bacillus, mycobacterium), fungi, rickettsia, etc applications： microbial contaminated surface, water and air. a variety of different sterilization, air and water purifiers contact: shirley email:xt4@xt xtlight@ho