Quality not perfect

Actually, a good buy. The LEDs light up as expected pure white and the amount of light is also true (so from the gut). The lamps consist of 3 LEDs fitted with boards that are miteinanderverlötet and are then poured into silicone. Unfortunately, a copy of the 10 items just during the soldering of printed circuit boards a cold solder joint, which then leads to flickering. A repair by resolder goes only by destroying silicon and hardly worth. So min. 10% wastage in my case. This will more likely be no exception, just reckon with.