LED Flashlight,LED Reading Lamp, Hand Light,Emergency Light,Mosquito Killer Bat, Headlight

How to buy high-power LED flashlight (for reference):
1, see LED number. The general use of a household of more than 1W LED, use the battery in 1 to 4 as well, and then a little bit bigger waves, for other special needs may need ourselves. Of course, the high-power LED flashlights typically can not reach the number 12.
2, see point of contact, the contact point to prison. Each torch exposure is very different, single grain battery through an external conductive pipe, if there is contact with an inappropriate way, it may affect the overall result does not light or use.
3, see the battery, there are two kinds of ordinary batteries and lithium, although lithium is a rechargeable battery, but the low life, about 2 years, LED life span of about 10 years can be selected according to actual situation
4, see brightness, brightness unit (LM), a good high brightness LED flashlight, slow decay, such as the current CREE LED.
5, see function, in order to power, the function is essential, 10% * of the late enough brightness.
6, see waterproof, a good LED flashlight with waterproof function, seismic performance, and the ruggedness. Because it is electronic products, flashlight front of a piece of circuit board, once the water prone to short-circuit, causing damage.
7, see the aperture, a good LED flashlight, a uniform circular aperture, poor yellow and blue LED flashlight beam is divided into two uneven distribution of color. LED condenser surface on one point as much as possible. This Unlike ordinary flashlight flashlight can adjust the focus, to look out not to have astigmatism.
8, see the appearance, you can choose aluminum shell, nice.