Size: 16cm*15cm. Bulb base: E27 (bulb not included). 1. Unlike other ceiling lamps, this ceiling lamp is made of the highest quality materials. The surface of the ceiling lamp is covered with high-temperature coating and will not rust. Likewise, it is a high temperature resistant ceiling light and is compatible with all types of bulbs (up to 40W). 2. Most commonly used with E27 vintage Edison bulbs for retro lighting. Create an antique, classic atmosphere for modern life. Ceiling lights are suitable for corridors, stairs, bedrooms and other places.