Christmas Bubble Lights: Clear bubble lights with Silver Glitter, 7(plus 1 replacement bulbs) bubble light night light, 5 watts each bulb, 35 watts per string, 120V power. C7/E12 candelabra base. End To End Connectable: Bubble lights for Christmas tree with 7 hanging sockets, total length 11 feet, 12" lead with male plug, 18" spacing between bulbs, 12" tail with female connector. Outdoor string light can attach up to 12 strands to cover large areas.(max 432 watts) Indoor & Outdoor Use: Vintage Christmas lights could be used to your garden or other outdoor place when the weather is sunny withstand light rain or water spills. The warm light created by the incandescent bulb generates the liquid within the tube to bubble cheerfully on your tree, creating a cozy feeling and Christmas spirit, watching these lights bubble is heart warming. Safe To Use: Classic bubble string lights UL listed. If one light goes out, the rest stay lit. Removable bulbs provide flexibility for easy replacement and customize designs. Bulbs are fragile goods, please take it lightly. Easy To Install: Set up your outdoor Christmas string lights in minutes. Extra one bulbs come in the box for replacement so you can remove the burnt out bulb and then install it.