100 Christmas BLUE Mini Light Replacements 3.5 Volts on White Base. This listing is for 100 replacement 3.5 volt, 0.12 amp, 0.42 watt BLUE Christmas mini lights with white base. These incandescent light bulbs can ONLY be used in 35, 70 and 140-light strings. They have all been tested and work. ***Guidelines for replacement bulb voltages *20-light strings = 6 volt bulbs...... *35 & 70-light strings = 3.5 volt bulbs.... *100-light strings = 2.5 volt bulbs........ *200 & 300-light strings = ESHD 2.5 volt bulbs .....***Specifications: 100 BLUE incandescent mini lights with white bases, 3.5 volts - 0.12 amp, 0.42 watts bulbs **Every manufacturer makes their own mini light bases therefore we cannot guarantee that our bases will fit your light strand. --****If these bases do not fit your light strand please follow the instructions below: *Un-plug the string of lights from the outlet. · Remove the bulb from the string by inserting thumbnail under base flange and pull straight out. · If replacing the base, bend the 2 wires straight and pull out the bulb from base. · Carefully insert the two copper wires of the replacement bulb through the small holes in the lamp base so the bulb settles into the base and the two thin copper wires are sticking out of the base. · Bend the two wires up the two sides of the outside of the base. · Push bulb and base back into socket aligning the base wires to the socket connections.