Hello
The associated bulb has an "E27" bulb with a number of 7 sockets. To use the lamp to its full potential, you would need to install 7 bulbs accordingly. On the display page of the lamp you will find "Matching accessories" with suggested bulbs below. Or you can just search for "E27 bulb" and you will find what you are looking for. I have installed Philips Hue controllable LED bulbs, which are very expensive but perfect for all needs (colour, brightness, dimming function, remote control, etc.).