Beautiful glass dome made of MDF and glass, perfect for interior decoration. - Product Name: Glass Dome - Brand: HOME COORDY - Size: Approximately 11 x 18cm - Materials: MDF, Glass - Batteries: 2 x AAA batteries (sold separately) I purchased this a while ago but never used it, and it's been stored away. I've confirmed it works by inserting batteries. The battery compartment lid was not included from the beginning. Thank you for looking.