Ordered 416 lm, 355 lm get

The lamp has a pleasant light color, slightly warmer than advertised. The brightness is okay, but smaller than advertised in the shop with only 355 lm 15%. This is not acceptable at the high price. For this reason, only 3 stars.

The lamp has an internal switching regulator, for this reason, the extended voltage range of 10-30V (DC). At 10V, the maximum brightness is reached, but the 10V around briefly a little brighter (flashing), which indicates a design flaw. So not at 10V (DC) operate! The current consumption at 12 V (DC) is approximately 270mA, thus 3:24 Watt.

Unfortunately, the light source is not protected by potting or guard, one always holds on the LEDs.

As for the relative brightness to other 50W bulbs, I agree with the previous reviewers, my feeling could one 30W bulb comply with (compared with Osram halogen 50W and 35W).