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Ni-Glo is a unique self-glowing marking device measuring only 5cm x 1.2 cm which can be repeatedly recharged when required. Recharge takes place by exposure to sun or artificial light sources such as torches, LEDs etc. Ni-Glo will begin to function after only 10 minutes exposure to direct light, but a longer charge or stronger light source will increase Ni-Glo brightness and prolong its afterglow. Ni-Glo is battery free, safe and non-hazardous.
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