I love these mason jar solar light lids. They add a nice relaxing feeling to my room. They remind me of fireflies when I was a child in a jar. I actually purchased them for a country wedding a friend of mine is having in april. She loves them. It was only the lids so I had to find some random jars. They fit on the small mason jars easily. I also used a pickle jar and it worked. The solar panel charged during the day and three of them were on almost all night long. I also love the fact that they came with the rechargeable battery already installed and it has a door to replace the battery when needed. If you want the to turn them on during the day you can cover up the solar panel with something and they will come on. Theres also an on and off switch if you want to turn them off. #RankBoosterReview #Kavin HO #ERUW