An ok lamp for the money, and it is bright, but 900-1000lm is extremely questionable!
I own an original Ledlenser flashlight rated at 220 lm which is several times more bright.
One of the LEDs was not working unless you applied pressure to it but at the price of the item, that doesn't bother me much.
The different exchangeable plugs worked fine and is a very nice feature.
I can recommend the product as a very easy and cheap way to upgrade an ordinary dull incandescent bulb to a much brighter lamp.