A few size comparisons:
M6 vs. M43
MM15 vs. M43
All Three Side-by-Side. The M43 is very short!
I weighed them all on the same scale, without batteries (batteries will add the same amount of weight in all three, since they all take 4x18650):
- M6: 15.4 oz; 437 grams
- MM15: 12.1 oz; 343 grams
- M43: 12.9 oz; 366 grams
Of note, the MM15 is a bit lighter, but it doesn't have nearly as much copper inside.
The illuminated button. It indicates the battery charge depending on the color. It can be set to be constant on, beacon (flashes intermittently), or can be turned off. This one is much less annoying than the MM15 beacon, which I feel is far too bright.
A few more colors:
The moonlight level is pretty low, considering you are powering 12 emitters. The switch light is always on when the light is turned on, and shows the charge level, as well as indicating mode changes and thermal regulation.
The machining and anodization are first-class, and very consistent throughout the light.
Did I mention that the square cut threads and anodization are first-class?
The tailcap has a nice laser-etched logo. I like that the rest of the light is clean.
Yes, even the spring holder is a copper MCPCB. The screw holes are countersunk.
The other side of that tailcap MCPCB. Here you can see the Beryllium-copper low-resistance springs.
Here is the battery contact side of the driver. The contact surface is thick and shouldn't wear quickly. I didn't take this one apart, since it's my only sample and it is going to be sent to several others for review. There are some pictures of the driver available earlier in this thread.
Here you can see the AR coating's reflection. I can't see any color cast in the LED output, and under most viewing conditions the glass is virtually transparent.
The light thermally regulates and keeps the maximum temperature around 50C on turbo.
This is definitely not a budget light; instead, it is a premium light that is going to duke it out with the best and most expensive the industry has to offer.