When you want to blend a miniature string light set on to a white surface these white wire string lights are a perfect option. Ideal for holiday decorating, 4th of July, baby showers, weddings, patio, and gardens, etc. This listing is for a set of 100 Blue Christmas lights on a white wire. UL Approved for indoor and outdoor use. 2.2” of spacing between bulbs. 18’ of lighted length. 20’ of total length. 18” lead from the male plug to the first bulb. 6” lead from the female plug to the first bulb. Connect up to 5 of these exact light sets end to end. The light string is rated 40.8 watts (0.34 amps). You may connect other light strings end to end up to a maximum of 216 watts (1.8 amps) total. Comes with 2 flasher bulbs, 2 blue replacement bulbs, and 1 spare fuse. Replace with 2.5V, 170 mA, 0.42-watt bulbs