WOW, we have been without power for 3 days and nights. I received my order just before the outage. These are priceless, used them the entire time, having the bright illumination with the use of both hands during an extended power outage is essential to able to safely move around, my wife needs to use a walker needing both hands, this headband light was a godsent to her during this time, I needed to work outside and the Headband Light was the best ever. Not just a great purchase but and defina...