Fit in 1:12 dollhouse miniature, Approx 2-1/8" tall, 0.5 glass width, 3/4 inch wide base. With On / Off switch on the base, easy to operate. Super bright light. Built-in button Lithium battery (CR1632), no wiring, no plugs, easy to change the battery Made of metal. Made by miniLAND - The Center for Hand Crafted Miniatures Contain small parts! Real glass, Not suitable for children under 12 All of miniLand's lights: Are extremely simple to operate, with an on/off switch at the base. Are super bright with a soft natural light do not require any wiring or plugs! Have a built-in Lithium watch battery (CR1632). Our lights are designed for 1:12 and 1:6 scales (sizes specified in the product title). All ceiling and wall lights attach with a miniature disk magnet, which comes included with the lights. Installation: Lighting your dollhouse is extremely simple with our battery-operated lighting system. Each light comes with its own battery and all you need to do is simply turn a switch on/off on the base of the light. The base where the battery fits unscrews so batteries can be replaced easily and as needed. Wall and ceiling lights also come with a magnet. Simply glue the magnet in the spot you wish to have your light, and the light piece will attach to the magnet with ease. There is no need for the complexity of electrical tape and wiring.