I installed a set of SL200 on my wife's bike a few years ago. I selected this because of no charging, always on and hard to steal. I think they are perfect in town, where being visible is very important, but you don't actually need powerful lighting. After many years of usage without problems, the front light has been broken and I've been happy to find replacements. I also bought a SL120 for my kid's bike.

Sulla mia vecchia mtb ho ruote con ciao veloce tipo corsa e per installare la luce posteriore ho dovuto tagliare l'anello. Un piccolo lavoro di pochi minuti che mantiene la soddisfazione per il mio acquisto.

I use reelight since long time .

The new SLxxx (1led) is worse than the original/previous version (2led) :
The original version had :
- a reflector inside the device as régulations ask for, the new version has NOT .
- A far better capacitor, the « old » 120 were blinking/flashing during long minutes after the ride stop (and quasi continuous lighting when riding at low temperature in winter with 3 magnets on the wheel) . The new version blink/flash at maximum 30s after the ride has stopped (even for a long ride and for 3 magnets on the wheel !) and you will never get continuous lighting (just flashes) even with high speed and cold temperature.

Reliability remains good as sources of failure are tiny (typicaly : break of the thin thin thin copper wire beetween coil and pcb because of vibrations, or the led burn because it’s of course not eternal) . Both are quite easy to fix fortunately) .

So the original version was better in my opinion …

Although I do like the SL 100 – have been using several of them for some years now – very much but the truth is: they are prone for moist. Especially if you have to park your bicycle always outside as most of us have to do here in Amsterdam. Eventually it breaks down. Especially the front light. Why is a mystery to me. I very rarely park my bicyle in a bicycle rack. I just ordered my third replacement front light but if this one also drowns shortly I have to look for another light solution.

I am somewhat disappointed with the latching/assembly mechanisms of both the light and the magnet due to the lack of a good quality design. I mean, the screwing guide through a plastic material feels very cheap and non-precise. It is very easy to get misguided because the metal support is not well aligned either then once you start screwing in, there is not an easy come back because, again, it is plastic and it's quite complicated to adjust in general (therefore I am assuming it won't be possible to get them installed in another bike, unless picking a larger screws size each time maybe). I wanted to return them back (bought two sets at once for my two bikes), but since I managed to get them installed in an "acceptable manner", I did not proceed with the return. Simply there is no other acceptable alternative in the market. But again, the mechanism seems very low quality for such a nice overall idea of being more environmentally friendly - which it is what I was looking for at the end. Sorry for the honesty, but I know this is more helpful for you Reelight guys for continuous improvement :)