Size: diameter 30cm Material: hardware + glass, applicable area: 5-10 square meters Light source: G4*1, the product itself does not contain a light source, but we will provide it as a gift to you. Scope: bedroom, living room, study, dining room, corridor, aisle Note: The product is measured manually and the error is within the normal range. Chromatic aberrations may occur within industry standards due to different light photography and display resolution.