How to choose a good LED flashlight

LED Flashlight

 LED as the light source is a new lighting tool, it has a power-saving, durable, brightness and other advantages.  

Buy a good LED flashlight should note the following points: 

1, light bulb. Household generally not more than 12, use the battery in 2 to 3 as well, and then a little bit bigger waves, for other special needs may need ourselves. 

 2, welded to prison. Each diode is connected to the circuit board by soldering, and if there is exposure to cold solder joint is not good, there is no light bulb may cause or affect the overall use. 

 3, electric condenser surface as beads on one point. Unlike ordinary flashlight flashlight that you can adjust the focus, to look out not to have astigmatism. 

4, the power switch contacts to be obvious. This flashlight to use more rotary switch, tighten to open, then loosen to pass, if the contact is not obvious, is likely to result when the light off when the phenomenon.  

5, pay attention to water-proof. Because it is electronic products, flashlight front of a piece of circuit board, once the water prone to short-circuit, causing damage.  

These recommendations for reference.