I used these to light up a Millenium Falcon kit. They worked perfectly!These were awesome for what we needed. My daughter needed to build a model rocket that we could fly at night. These were definitely bright enough and also light enough to not weigh the rocket down. It only came with 2 batteries when we needed 4, so I'm knocking off a star.So easy to installOnly one had a battery. It's very stiff so you pretty much have to go in a straight line. Once I got it set up it worked well.perfect for my needsNot very bright but ok. Only one string worked. The other just blinked a couple of times and died.The battery compartment is very cheap and hard to get back together. Other than that, they are very bright and fit my application quite well!Les 2 batteries sont incluses pour chaque guirlande. Style minimaliste que j'aime bien. Je les ai installées sous les tablettes pour éclairer les éléments de la tablette en dessous. L'éclairage n'est pas très fort. Un peu déçue. Il a fallu que je mette les 2 guirlandes sous la même tablette, une seule ne suffisait pas (j'avais 2 tablettes à éclairer).