Sufficiently bright and flicker-free light.

Very good light output. Beam can be assessed differently depending on the need and use.
This LED is used as a reading lamp and is therefore due to the small distance to the viewer perfectly okay.
The light color is in my opinion ideal for reading. Flicker is not noticeable.

Endurance test follows ... next year there are more info

According to evaluation of the Stiftung Warentest (2013), the life cycle assessment of LED lamps is better than for example in compact fluorescent lamps or even halogen bulbs.

It should be noted that for the construction of LED rare earths are used, of which there are few deposits worldwide. Seven percent of these precious resources go into the production of lamps.