These white LED Fairy wire waterproof lights are perfect for any event like weddings, anniversaries, or just when you want a little glow in a corner all year round. Made of thin copper wire, they can be bent into desired shapes like coils or balls, or they can simply take the shape of the vase or container you put them into. Being waterproof, they can be submerged in a vase for a dazzling centerpiece or layer them behind sheer fabric. 33-feet long, and is AC powered. Just plug into wall outlet or set on a timer for selected enjoyment. Not expandable. Light spacing 4".