These lamps are good because their spectrum is bright white. I have single LED bulbs that look yellowish compared to these. They simply screw into a standard lightbulb socket, but are larger and may not be suitable for all applications (e.g. in a lampshade). There was no power at the box, but my wattmeter reads 23 watts, so pretty power efficient. The English are a bit weird as they use the word "deformable" on the packaging. They mean that 3 panels are adjustable in different angles. They are advertised as garage lights but the spectrum is so nice I use them in the office and bedroom.
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