16mm light switch, rubber button

These are awesome! Prefer the rubber button over the metal, and the lighted switch adds a lot to the esthetic of the flashlight. Blue portion of the LED is a little dim compared to the green and red in the RGB version, but I'm sure a resistor swap could correct that. Also, not sure if some of the color S2+ are getting an update, but I got one of these to work without modification in a purple S2+ (specifically, the one used for the UV option).

Works great on S2+ with rubber switch (MAO, Black, gold or Gray).

I'm disappointed that these aren't compatible with either of the S2+ flashlights that I got them for (red light for my red S2+, blue light for my blue S2+), or in fact ANY of my flashlights, but I guess I should have read the description more thoroughly since I didn't realize these are ONLY compatible with the gray and black S2+ models and WILL NOT WORK with any of the other S2+ body colors. I also feel like kind of an idiot because it DOES state that in the description below, it just didn't occur to me that different S2+ models would have different types of tail switches and some aren't compatible. I didn't realize the switches I was ordering weren't compatible with the flashlights I was ordering and that I wasn't even going to be able to use them. This honestly just kind of sucks (even if it was my own fault) and was a total waste of money (in my case). If you know what you're buying and you AREN'T getting this for an S2+ with a colored body, then this may be a good product (although I can't speak to that personally) -- just be careful when ordering this and double check to make sure it's compatible with the flashlight you're getting it for!

I really like the illuminated keys. Blue has the best light output. Replacing the two 300 Ohm resistors with 1.8 kOhm leads to a longer battery life. The brightness is sufficient for me.