Price / performance ratio okay - no power supply (Product photo is so wrong / 'misleading') - not very bright - very yellow color

Unfortunately - or fortunately? - Are the providers no information about power consumption and / or light intensity. I therefore expected due to the word "3528" with about 7lm / LED, which theoretically would give 2100 lumens. This value is not achieved (it is somewhat difficult to measure with a lux meter a candlelight vigil, so my reading can only be understood as an approximation: Overall likely come to 500 lumens from the 5m).
Power consumption is just over 12 watts (!), Minimal about 1A at 12V (between power supply and LED chain measured). This results in nearly 42lm / watt, an ALDI-like value that can at least hope that the LEDs last a little longer than the usual China-Ware ("hold" within the meaning of "light output for longer than 6 bring months", which indeed at 75 is not just given% of LED lighting). And: The LEDs are only minimally warm ("lukewarm", not measured, but estimated about 38 degrees).
I use a disused PC power supply, which primarily something takes for this chain less than 20 watts and therefore - despite Asbach-Uralt - even outperform many "mini power supplies" (the last AC adapter, which I measured, 35% took just efficiency - wow!).

So much for the relatively objective values.

Subjectively: I use the LED chain on the back of roof beams in the living room, she lit up the white wallpaper from 20cm distance. This results in a sufficiently uniform surface illumination; under direct lighting the individual LEDs are definitely isolated (because to "DIMM" and it too far apart). For me personally, the light color to yellow is (I use for job purposes 4000-6000 Kelvin light sources'm therefore "white" to get used instead of "yellow red" light). My wife is "almost too cold, but goes" :-) (yes, it is on candlelight, thus "lighting without light", so to speak). So you could say: "Perfect" (because all are not entirely happy, but no one unhappy). Hmmm ...
The advantage of the "chain" is - if an appropriate installation is possible - clear that to handle the "point light source characteristics" of the LEDs. The chain replaced me with a 50W halogen spotlights, although it was definitely lighter but better focused.