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Best headlamp 2018, Headlamp, Led headlamp -

Choosing outdoor headlamp is a technical activity. Need to consider what battery, what brightness, what color and so on. As long as we understand our use and understand the basic performance of the headlamp, we can choose the headlamp that suits us.Before choosing a headlamp, let's first understand some of the basic features of the headlamp:1.BrightnessGenerally, the brightness of the headlamp is marked in lumens. Lumens are the sum of light from a point source in all directions. But lumens can only tell us the extent of total light output, but it does not clearly reflect the quality of a...

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