I have two headlamps. Here are their strobe specs along with some notes:
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Zebralight H600Fd Mk IV 18650 XHP50.2 Floody 5000K High CRI Headlamp
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Beacon Strobe Mode [that is, a flash every five seconds]:
0.2Hz Beacon at Low
0.2Hz Beacon at H1 [H1 is over 1500 lm]
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4Hz Strobe at H1
19Hz Strobe at H1
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This 19Hz strobe rate was possibly chosen based on this article:
With this article I’ll try to share with you the knowledge we have about handheld Tactical Lights (to name TL) in general and the use of the Strobe specifically. 1.Why do I think this is needed and 2. How come I (we) have this knowledge? Much reactions I hear about the use of Strobe...
www.candlepowerforums.com
According to the article, the Dutch police found that a 19Hz strobe light was ideal for stunning/disorienting an attacker. Slower rates were good at that, too, but the slower rates allowed an attacker to slowly move their hands in a way that the defender might not detect.
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Armytek Wizard C2 Pro Nichia
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1600 lm/10 Hz/6 h 20 min/ (440 lm after 2 min)
1600 lm/1 Hz/13 h/ (440 lm after 8 min)
90 lm/1 Hz/ 71 h
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Both the Zebralight and the Armytek have two strobe modes with over 1000 lumens. The Armytek specs explicitly mention that the strobe steps down after a few minutes. I think the Zebralight probably works that way, too. The H1 mode when used on continuous setting will step down after a while. So it makes sense the strobe modes using H1 work in a similar fashion. But I haven't tested the Zebralight to make sure that happens.
Both lights are programmable. This means once the user selects a strobe or beacon mode and then turns off the light that next time the strobe/beacon is selected, it will flash at the rate and illumination that was selected.
Triple-click from the off-state to turn on the strobe/beacon on the Zebralight.
Quadruple-click from the off-state or the on-state to turn on the strobe/beacon on the Armytek. However, that assumes the light is in Advanced operation. If the light is in General operation, it will take more input (which includes twisting the tailcap to get to the strobe/beacon; confer my post below on operating the Armytek:
https://www.candlepowerforums.com/threads/armytek-wizard-c2-pro-nichia-ui-notes.482212/ )
So an advantage of the Zebralight over the Armytek is that the strobe/beacon can always be accessed from the off state by three clicks.
One advantage the Armytek has over the Zebralight is when turning the strobe on and off repeatedly in a relatively short time span. Let's say the light is set for Advanced operation and the strobe/beacon was the last mode used. The Armytek strobe/beacon can then be turned on with one click.
So say that the headlamp is being worn on the head. The strobe is on in order that the user can be easily seen by vehicular traffic. At the same time the user might want to turn off the strobe momentarily, perhaps to not have it shining in the eyes of an approaching jogger, or even in the eyes of a driver as they pass so as not to disorient the driver and inadvertently defeat the purpose of alerting the driver to one's presence.
With both the Zebralight and the Armytek, one click shuts off the light. (Another possibility is just to rotate the light in the holder so that the light is shining upwards.)
But the Zebralight requires a triple-click to get the strobe back. The Armytek requires only 1-click to turn the strobe back on.
Another advantage of the Armytek is that in regard to its headband holder, it is easier to remove the light from and reattach the light to the holder. This facilitates switching between wearing the headlamp and holding it.
That advantage is significant if you are choosing between getting an Armytek or a Zebralight. But if you have both lights, you can use either light in the Armytek holder which turns out to be compatible with the Zebralight.