Fireflies in a Mason Jar

We bought these lights to create a display of fireflies contained in and flying out of a mason jar for a bridal shower. It was easily the hit of the party. The lights were bright, the battery has lasted for months (it's not constantly on, but has been on for 15-20 hours) and the wires are sturdy enough to stay upright, but not so tough to move around. I was skeptical because of the price, but this would be a deal at twice the price.