This is a heated coaster that you place your cup on and use by pressing a button. It's USB-powered for easy use. It was only taken out for photos and has never been used. The glass coating on the surface gives it a high-quality feel and a clean image. There's a button on the bottom (back), but I think the main operation is by touching the power mark on the surface. It's a Chinese product, and the text on the design is in Chinese. The packaging was crushed during overseas shipping. Please consider it as a bonus. *If you prefer to dispose of the box, please comment or request it after purchase. Color: White Material: Tempered glass Size: 160 x 120 x 20mm It will be sent by regular mail. I will pack it cleanly and carefully. Thank you. #coaster 2102