Current-Inductance Energy Saving Lamp: Operating volt;110-130v/220-240v Wattage:7w/9w/11w/13w/15w/18w Avg.life:8000h color temp:warmwhite:2700-3200k coolwhite:3500-4500k daylight:5000-6500k base:E14/E27/E16/B22 shell shape :CYLINDER(ELLIPIC),GLOBAL shell Material:ABS,GLASS inner tube:SL,2U