... 15 hours after fully charged 2)range:50m far range long work time highlight aluminum alloy solar torch 1) Alu alloy shell2 ... , which makes it solid and anti-abrade enough. It is good choice for army, field working, travel,mineral, road, railway, house ... , purple, orangeSolar panel :multi-crystalline silicon 0.35W ,5V,70mA. Life time:3-5yearsSolar battery: high efficient battery module(3.7V 1200mA ...