I had acquired the lamps to illuminate a corner of my garden, because I thought the brightness of light could replace the mains-powered lamp. But far from it. The light is hardly enough for around 50 cm to the lamp and does not differ from the to be acquired in each Bauhaus Solarfunzeln.
But properly, the material and the design. The lamps should be sufficient for illuminating a walkway in the garden. They also work well. The burn time is sufficient for several hours and the lights turn to them correctly one with incipient dawn. Too bad that they give no more light.