I got my hands on an unusual underbarrel flashlight. A new manufacturer on the market reasoned that if you need a red or green light, then why put filters on top of the flashlight, you can build them inside! Was it worth it to fence these towns or the result was not worth it? See in the review


  • Nutrition: 21700
  • Light-emitting diode 12v XHP35 HI
  • Max Brightness: 1300 lum
  • Maximum range 400m (40,000 cd)
  • Colors: white, green and red
  • Size:
    length 16.71cm / 6.57 inches
    head diameter: 4.14cm / 1.63 inches
    case diameter: 2.39cm / 0.9 inches
  • Weight:
    With battery: 240g / 8.4oz
    Without battery: 166g / 5.9oz

Packaging and appearance

The flashlight is well packaged. Not exactly good, but definitely good.

Particularly pleased with the availability of work schedules. True, the brightness scale is presented here so cunningly that the temperature control saw seems to be quite insignificant, and High almost rests on the turbo. Hey dodgers! However, at the end of the review, I will show you what you should really expect from this flashlight.

The kit has everything, and even more, namely a spare button. By the way, there is also a remote button for it, for some reason they didn’t send it to me.

And if the lanyard here is very fat, exactly the same as that of the top flashlight from Fenix, then the cover is frankly modest.

The flashlight itself looks modest. His design is devoid of any refined features. However, he has a peculiar enough appearance that you confuse him with some other model.

Modesty in design is balanced by indiscretion in size. The flashlight is frankly rather big, which is not a plus for an underbarrel flashlight. 16.4 length and 4.14cm head diameter is definitely a lot, the flashlight is actually long.

The button is normal, power direct click. The click when fully pressed is sharp and loud, not a plus for hunting.

The spring is good. I note that I have not shunted it, unlike what I saw in the English-language review. Taking into account the fact that the package with a flashlight got to me for a monstrously long time, I will assume that during this time the spring began to be shunted.

But with the spring on the head, the situation, alas, is sad. She’s in the promotional picture.

In reality, a single coil is simply soldered to the driver. This was probably done in order to accommodate a frankly long 21700 battery with a built-in charging board. Here he is by the way. It charges quite quickly, in just 3 hours.

The lack of a spring for the underbarrel flashlight is a frank drawback. Not that the contact was broken here, I hit the board with all my strength with the tail of the flashlight — it did not go out. The question is that the driver board will have to dampen the recoil when fired, and it is not known how long it will last. It is surprising that with such a length of the flashlight, the manufacturer could not install at least some kind of spring.

For some reason, the case is devoid of the usual knurling: “pineapple”, square or there is a classic small rhombus. Instead, it’s just flat cheeks.

Considering the fact that the case is smooth here, but there is no clip, this design is definitely not a plus for grip reliability. But the grip itself is definitely comfortable, thanks to the length of the body. Convenient and access to the buttons for the same reason. For example, the same Nitecore TM9 was made monstrously short, which made pressing the tail button frankly inconvenient.

The head, due to the design features, is quite massive.

The side button here looks extremely simple. Luckily, it sticks out just enough to be easily felt even with winter gloves on.

Here you can clearly see the ring, which, when rotated, changes the filters. As far as I was able to understand, this is a magnetic, not a mechanical switch. The ring moves smoothly. There is a gap of a couple of mm, but it does not interfere. There is no visible gap with the body.

The teeth of the bezel are wide, but quite high.

And here is the most interesting. So, at the bottom of a sufficiently deep textured reflector, an XHP35 LED is installed, in its maximum long-range version, i.e. without silicone dome. A “kaleidoscope” of color filters is installed above it.

Since the bezel was unscrewed without effort, you can see how everything is organized inside. Well, neat and quite unusual.

Two slats on the sides hide a spring with a ball at the end. When you select the desired color filter, this ball enters the grooves, fixing the selected position of the ring.

It all looks just fucking beautiful — like some odd-eyed Michelin man. Please note that there is not just colored glass, but also a small reflector under it. And on top is already the main large reflector.


Extremely simple and understandable to any user without a manual. This is good.

But the fact that you can forget about instant access to the same turbo is bad.

In short, the tail button is OFF-ON, the side button changes the brightness of Low-Mid-High-Turbo by pressing

When you press the button, the strobe is turned on, which is undoubtedly very “necessary” for an underbarrel flashlight. I think that it would be more justified to hang an instant turbo on the button.

In general, if you need to turn it on and shine, then it’s fine. For thousands of people, this is what they need. For hundreds, this is too primitive.

How Cyansky H3 shines

The flashlight is well stabilized. 450 lumens is frankly Very modest brightness for High. However, this brightness (in white color) is enough to work within a hundred meters.

The flashlight is really big and could easily handle a much brighter High.

Could, but can’t. The same 1300 lumens, again, a fairly low brightness for a flashlight with such dimensions. Perhaps that’s all Yes, and the LED itself accelerates without problems to the level of 2000 lum.

The light turns out to be something like a medium shot with some range. If the reflector was smooth, and the brightness was brought to the usual level for XHP35 HI ~ 2000lum, then the flashlight would be radically longer-range. If the latter is a completely logical step, then replacing the reflector with a smooth one will make the light less comfortable at close to medium distances. And for the same smoothbore, the conditional 100m is the main radius (judging by the words of those hunters with whom I spoke). And in the form as it is, the flashlight gives enough light to work within this distance. Only frankly insignificant 100lums of red light brightness may not be enough here. And this is not a defect of the H3, the red filter would cut the brightness on any flashlight.

Well, here you can clearly see that the range is clearly not the trump card of the H3. With white light, you can work well within a radius of a couple of hundred meters, however. And that’s good enough. But only in Turbo — 450 lum High mode here will be significantly less bright.

General impressions

Cyansky H3 is an unusual flashlight, which has a lot of pluses and minuses. It is positioned as an underbarrel flashlight for hunting, i.e. for an occupation with which I have nothing to do. So do not expect that I will be able to reasonably assess its usefulness for exactly what it was made for. If you understand this — write in the comments, I hope, based on what I have shown, you will be able to make some judgment based on personal experience.

However, my review-sofa experience still allows you to make some objective pros and cons.

  • Cyansky is a completely new brand, known only in narrow circles of lantern forums. It was all the more pleasant to see that the main and most complex functional unit in the Cyansky H3, namely the “carousel” of color filters, is far from being organized here primitively. Let me remind you that under each filter there is a small reflector, there are grooves for a spring-loaded lock in the position of the color filter selection ring. Functionally, it’s really convenient. In the head of the flashlight from the side of the LED, everything is nice and neat.
  • I have no complaints about the main functional feature of the flashlight, the choice of color here is actually convenient and I strongly welcome the possibility of this choice in general. The other flashlight I’ve seen with supplementary light, the Brynite Artemis, was just a frankly nasty craft with a monstrous PWM flicker.
  • The light distribution here is quite pleasant. There is some margin of range and relatively suitable side illumination.
  • Until the turbo drops, you can count on good light within a radius of about 300m. This is much more than needed for a smoothbore.
  • The light itself is stabilized and you can count on a long run time thanks to the large 21700 battery with fast built-in charging.
  • The flashlight is comfortable in the hands, there is no difficulty in finding the side button. The manufacturer optionally sells a remote button.
  • The flashlight is larger than the mass of similar models with 1 * 21700 power
  • The knurling is not particularly tenacious, at least an ordinary clip helped here, but for some reason it is not there.
  • As well as there is no spring from the side of the head, which is frankly strange for an underbarrel flashlight and is fraught with broken recoil by the driver.
  • Tail button too loud
  • 1300 lumens maximum brightness from XHP35 LED is frankly few. As well as 450 lumens is frankly not enough for High mode.
  • The XHP35 has a neutral light version, I see no reason why this flashlight has a cold LED installed.
  • Thermal control is too aggressive. A flashlight of this size should run 1000 lumens without cooling without any problems. Immediately, the brightness from the turbo drops to 65% (i.e. 850 lumens) and the flashlight cannot keep this brightness without cooling. However, most hunters said that they needed underbarrel light for an exceptionally short period of time, and here the influence of thermal control should not be taken into account.
  • As a result, speaking of stabilized light that does not jump up and down, you can count on either 850 with cooling or 450 lumens without cooling.
  • color filters Very greatly cut the brightness, especially the red color filter. Even a full turbo only delivers 100 lumens for red light (i.e. either 65 or 30 lumens of continuous light depending on cooling). With green light, however, the situation is better. Whether it’s a lot or not — decide for yourself.

The dry residue is the following. There are virtually no models with built-in color selection on the market. The one I know, Brynite Artemis, is just awful. I have no complaints about the Cyansky H3 from the standpoint of the universality of light as such, here the main functional feature is that the built-in color filters are well implemented. Although it is strange that the manufacturer did not increase the brightness for the 2000 lumens that are easily achievable for this LED. Whether there will be any use in the hunt from the red-green light is not for me to judge (many say that it will not). At a minimum, you should not expect significant range from them, there are specialized models with green or red light, for example Acebeam L17.

But! If you need a moderately long-range underbarrel flashlight with different colors, I think the H3 will fit. If only simply because you simply have nothing to choose from. If there were no filters, then it would be a rather boring flashlight with a rather big price tag in terms of the main light, control, and a set of brightness. But these built-in color filters are exactly what other models do not have. In general, decide. Flashlight specific, for specific purposes. It has pros and cons, and I named those that I saw.

Where to buy and how to save


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