A built-in variable touch dimmer means that you can turn off, turn on, and dim the lamp with only a light touch of your finger As the light can be dimmed, you are able to choose lighting suitable for every occasion Creates a soft, cosy mood light in your room Helps lower your electric bill because dimming the lights saves energy LED light source consumes up to 85% less energy and lasts 11 times longer than incandescent bulbs. The light bulbs are pre-mounted but can be replaced when needed