I was foolish enough to buy 3 of the of the Gismos. They were at best underwhelming. For the money, durability and customer service I would recomend the new Huntlight FT-01 CREE X-Lamp. In my opinion these Huntlights are brighter than any of the Gizmo lights, more durable and easire to use. Moreover they are one third the cost, brand new. I was so displeased with the Gizmo lights that I sold them recently at a garage sale. The three Gizmo lights sold for a grand total of $24.38 cents, without batteries. Not a vey good return for the $900 I paid for these three lights. But you live and learn.
I'm sure, however, that there are Gizmo groupies who will disagree with me. These groupies will say Gizmo equates to quality. In my opinion and in my experience this is simply not the case. I hope this helps.