LUMEX PRO. LONG-BURN TIME, ECO-MODE AND ZOOM. ECO-MODE: a consistent luminous flux for a continuous operating time of many days. Wide-angle beam adjustable zoom collimator for proximity vision. Water resistant: rain and splaches, snow and frosty weather. Red emergency signal fixed or flashing on the rear and on the front. Professional multipurpose head lamp, with 5 frontal lighting modes and 2 rear lightning modes. ECO-MODE provides a sufficient luminous flux to carry out almost any foreseeable activity. You need to switch to HIGH-MODE only when you want a focused beam to be precisely directed over a long distance, or when you want a very intensive luminous flux for lightning a wide area (wide beam). 3 AA ALCALINE BATTERIES (1,5 V) INCLUDED. FLUX: 185 Lm/16 hrs. 185 g