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Helmet Magnifier MG81001-B
size:64.5*34.5*48.5mm volume:24pcs. automatic booster. - 
Helmet Magnifier MG81001-B
Magnification:1.7X;2X;2.5X;4.5X size:64.5*34.5*48.5mm volume:24pcs. T he character istics of automatic booster. It can make the voltage of two AAA batteries incress from 3V to 4.5V and enhance the brightness of LED lamp.It can be continuously used for 30 hours without change of brightness.Even if the battery only has 30% energy and the voltage is 1.5V.It can be normally used too.
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