The Vortec offers the highest power to weight ratio of anything in it's class. The front-mounted battery pack eliminates the need for external wiring and evenly distributes weight across your forehead. Harsher cold weather conditions are no problem for the Vortec; it 's configured to provide significant extended burn times using lithium batteries without the need for bulb conversion. The Vortec includes one halogen bulb one long-burn bulb and wide and narrow beam reflectors.