The led lenser p4bm is a slim pen shaped torch which points a bright white led light up to 25 metres into narrow or inaccessible areas frequently used for everyday inspection tasks by tradesmen engineers and technicians who like to have on hand a top quality lighting instrument that clips onto their shirt or work wear waterdust resistant to ipx54 the p4bm employs the latest blue moon focus technology a unique prismatic structure that projects the leds inherent blue light out to the edge leaving