This product is so amazing! I only have three bottles at the moment (waiting for my family to drink more wine so I can have more bottles!) lol. These lights are so cool! You can see how the color of the bottle affects the way the lights come through. All the lights are “cool white” but since the other two bottles are a dark color, it comes through as “warm white.” These are extremely easy to use. They come with batteries installed AND a whole set of extra batteries so you can use all 10 lights again! So awesome. When I showed my family they had no clue that the “cork” was not an actual cork but the hub for the batteries and the switch to turn on! Love these lights! Will definitely be purchasing the “colorful” ones for holidays. The seller is A+++!