Up to now, the luminous efficiency of a lamp depended on its size and weight. Just 36g, this lamp weighs less than the end cap of big flashlights. With an advanced focus system you can quickly and smoothly adjust the focus of the beam from a flood to spot illumination and any level in between to suit the situation you find yourself in. For the Ledlenser P2R CORE – as for all of our flashlights – we have spared neither trouble nor expense. The only thing we saved on is weight.