What brand of LED flashlight is good?
Just look at this point, the main three, Never mind with the brand, the world's first United States Shenhuo, its various models flashlight life time are also different, not what standard, the brightness of the light source and condenser determines the irradiation distance.
The length of life depends mainly on the power consumption of the light source, the size of the battery power and the current size of the drive circuit. Any brand is the same.
Medium grade flashlight is generally used LED as light source, of course, except HID. The cylinder body is made of aluminum alloy, stainless steel, titanium alloy and other metal materials.
