Specifications:Material: AcrylicColor: white light, colorful light (optional)Shape: round, square (optional)Power: button electronic CR1620*2 (with)Endurance: 10 hoursSize: 10*10*0.3 cm/3.9*3.9*0.1"Weight: 45 gLight mode: white light: fast flash, slow flash, long light; colorful has only one modeSpecifications:Made of acrylic material for durability.Exquisite workmanship, easy to use, and clean.Environmentally friendly materials, non-toxic, safe to use.Colorful, safe and environmentally friendly, creating a romantic and warm atmosphere.Space, optimized landscapes and lifestyles provide a romantic, sublime and elegant life.Press the clear button on the back of the coaster to activate and change the light settings.Package Included:1*Illuminated base lightNotes:1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need.2.Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm)3.The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding.Thank you for understanding.I welcome you to come to our shop.Our products are 100% guaranteed.If you have any questions or dissatisfaction, please contact us.