This is not a good lamp both in construction and quality of lighting. 

1. One had to be thrown out the replacement i took to a tradesmen to remedy factory issues of poor tolerances in threads of cuplinks. Both cam "jammed" from the factory.

2. this is not a suitable reading lamp. This is not like sunlight more like a "thunderstorm" is approaching. The light is very weak and not giving good light for reading.

Avoid buying this one.