Nowadays, everything is willing to catch up with a trend and take a popular route. However, there are some things we don't want to see happen, that is, negative trends. Although, in the daily media reports, we have seen some news such as coal mine gunpowder explosion and car explosion, we really don't want a small flashlight to join the excitement. In this way, it is not because the flashlight is "small" that does not allow it to make up this number, nor does the author stubbornly believe that only the "big" explosion is worthy of attention, but the author is really unwilling to see that the tragedy occurs in your, my and his daily life.

From Mr. Yi's statement, we can see that he complained about LED flashlight, so what is "LED flashlight"? LED flashlight is composed of multiple diodes with high color temperature. The visual feeling is very bright, which is his characteristic. In addition, he is very energy-saving. A No. 5 battery can last more than ten hours. In addition, the magnesium aluminum alloy metal shell has a small appearance, windproof, rainproof and corrosion-proof, which is very suitable for outdoor use. But the big disadvantage of this product is that the irradiation distance is very small, usually more than 20 meters. I can't see clearly when I'm far away. The above is the shortcomings of this flashlight itself. The following are some small factories that have seen large profits and production, and the continuous decline of prices, resulting in the decline of aluminum alloy materials of flashlight and insufficient weight. In addition, to cater to the hearts of many people who feel bright, turn up the current to make the LED brighter. In fact, the diode of LED flashlight is not high in the whole cost, but magnesium aluminum alloy shell. The main is the component and process. The products produced by large factories are relatively formal and have sufficient weight. In addition, the technology is very important. And the process of some small factories is very rough. In addition, the LED should control the current, otherwise it can be burned out. Therefore, the selection of LED must pay attention to the above points.

In addition, the difference between LED multi lamp and single lamp 1W is that single lamp 1W is a new light source, which is a very popular product abroad. This led is mainly a lamp with high power design. There is also a spotlight. If the quality is good, it can irradiate more than 100 meters away. But the price is higher. All good ones have drive circuits. The appearance is also very exquisite. And the metal oxide film is used as the appearance decoration. Durable. The choice of this product must depend on the process and workmanship, as well as the size of the factory. Otherwise, the quality cannot be guaranteed. But the price is high.

The topic is back to the fashion trend. Today's flashlights have a wide variety and complicated patterns. If readers want to buy, it is enough to dazzle you. According to the author, at present, there are: plastic flashlight, LED flashlight, iron flashlight, aluminum alloy flashlight, stainless steel flashlight, hand flashlight, environmental protection flashlight, mosquito clapping flashlight and so on. So, how do we choose a flashlight? Please note the following four points:

1. There are two kinds of batteries: ordinary battery and lithium battery. Although lithium battery is a rechargeable battery, its service life is low, about 2 years. The service life of LED is about 10 years, which can be selected according to the actual situation.

2. Look at the bulb. When the bulb is off, it is difficult for the naked eye to distinguish whether it is good or bad. You can look at the consistency of the bulb when it is on.

3. Look at the aperture. The aperture of a good flashlight is a uniform circle, and the light spot of a poor LED flashlight is divided into yellow and blue, which are unevenly distributed.

4. Look at the brightness. A good flashlight has high brightness and slow attenuation speed.

5. Look at the waterproof. A good flashlight has waterproof function and good seismic performance, that is, it is resistant to falling.