Duro-Flashes are being used in law enforcement, fire departments, contruction companies, work zones, search and rescue, towing, helicopter landing zones, road crews, trucking and many companies that need to mark a vehicle, close a lane, direct traffic, make a vehicle or hazard more visible etc. Their function the same as an incendiary flare, but Duro Flashes are safer and much more cost effective. The Duro Flash was made with durability in mind. It has no switches or moving parts which could break off or become damaged. It is water- and weatherproof. The on/off switch is incorporated into the recharge design so users can plug it in to turn it off and charge it, and unplug it to turn it on and put it to work.