After about 15 years, I have my old lamp replaced with this. The old woman had very strong flickering and it was unbearable. This lamp has been securely packed and very fast, from Thursday (ordered) delivered on Wednesday. The ("white") light is much brighter and resembling daylight, as I've hammer out here with other lamps at my desk. Neither the 20 watt halogen penlight nor the 40 watt bulb, I have tasted here a long time substitute could provide a pleasant, adequate, large-area light for writing. This 11 Watt miracle does. The only thing there is to complain: I notice a really minimal, very weak, but barely nenenswertes flickering at this lamp here. But for a total price of 4.67 and 11 watts of power can not demand too much you. Conclusion: enormous Lichtleieistung for a small price and low consumption ,.