Electroluminiscent Backlit Clock

Pile front and nights in bivouac

When the batteries were equipped front incandescent bulbs lasted a very short, half an hour, an hour or two at most and it was dark. For the nights in camp, then was provided with candles, which lasted much longer. The arrival of

led changed everything. Today, three small AAA rechargeable 1000 mAh provide 10-12 hours of light with three LEDs lit up and make more light of five candles contained in the old cigar box.