30 white bulbs with a total lighted length of 7-1/2-feet. with this LED light set you can connect up to 3 sets end to end on one outlet. UL approved for indoor use only. LED lights stay lit even if one or more LED bulbs fail on the string. Because of the efficiency of LED lights, you receive up to 90% energy savings and a longer average rated lifetime. The lights are cool to the touch and the low working voltage and current lessen the chances of fire or electrical shock.