Brother Tony's daily life at Buy's house
The team group was full of topics last week, Kangming KM2899 strong light headlamp 2400mAh lithium battery long battery version was finally delivered to home today, Tao Ge's only motivation for buying this headlamp is that this product has a built-in 2400mAh large battery!
The protagonist of this unpacking and ticket checking: Kangming KM2899 strong light headlamp (2400mAh long battery life version)
Less than 15 headlamps with a lithium battery cell of this capacity, at least it is not a loss to disassemble the accessories! However, after unpacking, the feeling from almost overturning to the real fragrance of domestic products is still very sour [tears] (maybe you can also explore from the side why this thing is full, but it is sold at the price of cabbage) Gossip less, let's look at the picture and speak:
The package includes a headset lamp, a Micro-USB charging cable, and a set of T-shaped/slotted variable headbands.
The old OEM factory, the product parameter specification certification information is very formal,
In addition, the brightness attenuation of the Kangming headlamp (and most lighting products) is a smooth curve, rather than the cliff-like brightness reduction after the battery attenuation of most products (even including Ershen and Philips), which is really helpful for outdoor scenes.
The detachable elastic nylon strap can be worn in one line when wearing a hat, and can be worn in a T-shaped cross combination in a reinforced fixed environment.
The headlamp body is actually much better than some of the buyer show photos I saw before, and the charging holes and power switches are made of plastic covers to be waterproof and dustproof.
There are electrical specifications for the headlamp at the bottom, a built-in 2400mAh lithium battery and a 5W real standard power of strong LED lamp beads.
Looking at the transparent plastic cover on the outside of this headlamp, do you have the urge to take it off?
Then there is the suspected rollover scene!
That's right, when I looked at the plastic cover on the outside of the lamp head, my first thought was whether this thing was a protective case for the outer packaging. Just to protect the lamp head?
And then I screwed it violently...... Unscrewed down... Came down [tears run]
I even got a close-up of this very well made metal reflector! [covers face]
Then I found that it seemed a little wrong, the LED lamp beads were not sealed around, so wouldn't it be gray and damp in the open air?! [Shocked] It was only then that I suddenly realized that this was not a lampshade protective case! No, it's the lampshade protective shell, but people didn't let you remove it [tears] I gave it a brute force!
Fortunately, it is perfectly restored and installed, and it is good to buckle it and screw it back (๑•̀ᄇ•́)و✧
But fortunately, along the notch of the transparent lampshade, it was installed back as it was, this suspected detachable structure made me think I had turned over a car [laughing and crying], but this open-ended design actually has benefits, such as low dust or low humidity in the case of higher illumination, the lamp head needs to be disassembled and maintained, and the ultra-long time (such as more than ten hours of long-term lighting) When the lamp group needs to be cooled in the use environment, this (forcible) detachable plastic cover also has its existence value. Of course, if you want to get a better IPX three-proof effect, you can also use all kinds of sealants in one step (but I don't recommend it [flash of inspiration])
Of course, the above ideas are not the best answer for ZUI, and the reason for really using this transparent lampshade shell is revealed after the light is turned on! The role it makes is obvious! Let's take a look at the more detailed explanation of [Green Hat]!
Let's move on to the details
One of the reasons for this floor price is the aging Micro-USB charging module. This thing is indeed a bit outdated, and even some riders do not have this kind of charging cable in their hands for a long time. However, in KM2899's charging system (hardware), the battery mentioned earlier - the illumination is stable curve, naturally its discharge/charging system is made of double anti-strengthening, the battery capacity is already several levels larger than others (most of the cheap headlights seen in the daily ten-yuan file, including Shenhuo, Shenyu, Philips, its standard battery is basically 200~500~1200mAh), plus charging and discharging optimization, KM's 2800, 2900 two entry-level double-digit headlamp series, All have a good battery life in the measured environment, which can be regarded as an advantage and disadvantage, as long as there is a Micro-USB cable in hand, there is no difference in daily use [flash of inspiration].
The headset stand has a built-in cushion cushion to relieve the pressure on the forehead for a long time.
In addition, the bracket supports about 90° opening and closing, and the lighting angle can be adjusted, which can be adjusted at any time according to the use environment. PS, there are screws fixed at the joints of the bracket to adjust the damping degree, and you can adjust it according to your needs.
There is a fixing screw in the left and right upper corners under the bracket, which can be disassembled when the battery needs to be replaced or repaired and maintained.
Turn on the lights! Measured brightness performance:
The above is two levels of strong light and dark light performance, and the result is that the camera automatically adjusts the exposure, so it is not very visible, and the following is directly measured in the scene for your reference:
Living room at 10 p.m
Since I don't know how bright this headlamp is (because I only paid attention to the long battery life of 2400mAh before), I plan to take a few photos in the living room to cope with the errand [covering my face]
The moment the lights are turned on... One wall is almost completely illuminated!
I pressed it again to adjust to low-light mode, and the light did dim a little, but it was corrected by the phone's exposure compensation... I(╯"□′)╯(┻━┻
Look down on the ground, simulate the scene of catching the sea, catching insects, and digging mushrooms, to tell the truth, such a large aperture and brightness, brothers, is it big enough! (This is the brightest of the dozen headlamps I've unboxed in the past 4 years!) It's too big and too bright! ）
Then I sat in front of the computer and turned on the light to shine on the ceiling [tears] Yes, I gave [like] too much to say, this is just the limit of my floor height, not the limit of the headlamp.
I don't want to test the illuminance of the short-distance flood environment, because it is really enough and far exceeds my expectations (after all, this product is less than 15 ah [covering face]) Let's try its long-range shooting function again! After all, if the far and low beams do not have their own zoom system, it is difficult to take into account, and I am also doing a good job of its low beam intensity (myopic eyes) and high beam white to (not far away) psychological expectations [tears]
Yet actually! Σ(っ °Д °; )っ
This goods... Keep watching!
At ten o'clock in the evening on the weekend, the middle school campus was pitch black!
My house is completely surrounded by junior high school buildings, so it is dark outside the window at night, which is more suitable for testing flashlights.
Turn on the lights, this high beam is very powerful! The leaves of the trees more than ten or twenty meters away are not clearly distinguishable, they are directly white and overexposed!
Pushed back dozens of meters to shine on the wall of the school building, it is still too exposed, brothers, it is bright through the window glass to the school corridor! If I had a 200~300mm telephoto lens, I would be able to shoot the slogans in the corridor with this flashlight!
Push back 100 meters, the top of the 2~30-storey high-rise building opposite, this time it is finally no longer overexposed, and the long-distance light is still gathering powerful.
Looking in the direction of my beam of light, and notice the left side of the picture above, I have to see the entire window frame fully illuminated! I now finally know why I designed this transparent lampshade cover! Because it directs light to the side wall of the transparent lid of the lampshade, creating a halo (see the bright halo in front of the lamp head!). That's it! ), and then illuminate the area on both sides! Get the most out of your lamps!
Continue to push back to the upper floor of another community (the black and white building in the middle of the picture) a few hundred meters away from a school, a community, and an 8-lane road, and the naked eye can actually see that the lights are shining on it, but because there is street light pollution on the road, the photos are not too clear;
So I changed the direction, and at the beginning of the following picture, I will take a picture of a high-rise building under construction farther away for your reference:
Follow the lens to the right,
That's right, it's the high-rise building covered with a blue construction tarpaulin in the picture above, it doesn't matter if you can't see it clearly, turn on the Mi14Ultra's 5x optical zoom:
The curtain of the tall building under construction in the distance can be illuminated by the headlights, but the spotlight is already very scattered, which should be its long-range limit.
Considering the privacy of individuals and neighbors, please forgive me for blurring the location here
I opened the map and measured the distance of the headlights above, 194 meters is the high-rise building behind the nearest middle school to me, the straight-line distance is 194 meters, plus more than 20 floors high, and the diagonal distance is more than 200 meters; The farthest is the distance of 452 meters in a straight line, which is separated by a road, and the diagonal distance feels like 600 meters; Then there are the high-rise buildings under construction at a straight-line distance of 374 meters, and the diagonal distance is also more than 450 meters. As far as KM2899's long-range performance is concerned, I don't know if you are still satisfied [flash of inspiration]
Do you think today's ticket inspection is worth it? Welcome to complain together in the comment area!
To sum up, do riders think this 15 yuan domestic headlamp is electronic waste or value for money? Welcome to chat with Brother Tao in the comment area, let's see you next time out of the box [flash of inspiration] (lighting battery life measurement, I will report to you in the micro headlines later, remember to come back and see ha~)
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