Well, finally I got the chance to have a Flieger, this is a prototype, one of 24, if I'm not mistaken, differs from the serial version by the presence of the last mode memory and the waterproof rings here are black, not brown-red. I think can post some observations here, I hope this will be useful to someone.
The hue and shape of the beam are good, reminds me of my HDS with XPL 4000K - very nice and useful beam for general use. The emitter is perfectly centered and also in height inside the reflector.
Size and controls are the same as my main light Jaxman E2L. First of all I checked the currents if using a freshly charged 18650 battery::
lm = A = lm/W
1 = 0.01 = 27
25 = 0.06 = 113
100 = 0.2 = 135
500 = 1.36 = 99
720 = 2.94 = 66
Jaxman:
800 = 3 = 72
120 = 0.38 = 85
24 = 0.06 = 108
Apparently, they have the same drivers, but with different mode settings.
At level 1, PWM is perfectly visible with the naked eye, at level 2 it is not so noticeable, at 3,4,5 levels I do not see it.
Level 4 and 5 almost do not differ in brightness, in nature I do not see an advantage in lighting range, taking into account power consumption, level 5 is superfluous in my opinion.
The lack of a clip or lanyard is rather inconvenient - he falls out of his pocket, rolls on all surfaces and tries to escape.
The absence of a spring in the head contact does not allow working normally with unprotected elements (they are too short to have contact), same problem as Prometheus Aplha, this could damage the battery if dropped by the glass.
The walls of the case are very thick here and at the same time the glass has rather weak protection, it is very similar to the Maglite Mag-Tac in this respect.
Surface machining is excellent and close to McGizmo, but a little behind.
In general, a rather interesting product.