They are multiple, a total of 10 LEDs per lamp to be exact. We performed some testing on these lights on a LR D-90 that had Hella H-4s on it. The difference was quite significant. We will be doing some field testing in the next two weeks and will report back here.
I can see that there are multiple LEDs. So if one is compromised, it does not affect the other 9?
I will be interested in seeing how they compare against a E-code H4 set up for sure. They look like they have a very cool temperature, which is a major reason why I would pass. Ultra cold blue or white does not necessarily equal more light, although it can lead to more eye fatigue. But each person's optimum color is different.
I personally prefer something well warmer than 4000K and usually nearer to 3500K is best. I run standard Euro-spec Osram or Narva H4 +50 halogens (i.e the European Osram Silverstars, which have clear glass) or sometimes the US-spec Osram/Sylvania 9003XV (i.e. Xtra Vision 9003 55/60), these types of bulbs typically come in around 3200K to 3500K and I personally much prefer the yellowish light.
Plus I will be interested to see if they really put more light down. They are surely going to seem brighter, but that does not mean they are focused well and actually put light down the road. The measurement of lumen is just produced light intensity and I'm sure these will be high, but when measuring usable light the lux or foot-candles and some idea of the area covered are more important than the pure lumen that a bulb produces. Lux is lumen per sq. meter and obviously tells you about the bulb intensity and lens focus.
FWIW, the Osram +50 Euro H4 70/65 produces about 1750 lumen. The other nice thing about H4 style housings is you can shop around and find the one that meets your needs, Hella Vision Plus H4 (E-code), Hella DOT approved Vision Plus, IPF, etc. They all have a little different pattern, some more uniform than the others, better high beam, etc.
I don't care much for sealed beam bulbs because they don't allow you choice on beam style and bulb specs, so it seems going to these LED lights puts you right back at square one, you only get what color temp, developed intensity and lenses they decide to package together.