These ultra durable, waterproof tea lights work for any event or occasion. Comes in a pack of 12. They are small enough to hide in floral arrangements, vases, use as accent lighting on tables, toss in a pool and so much more. Even though they're small, the light is pretty powerful and adds a prominent pop. To activate, simply remove the paper protective tab inside and twist the bottom half toward the "on" position. Each light requires (2) CR2032 batteries, which are included and replaceable.