Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: is this american brand?
Document: well i love to be cheap and this does the job i need it to do, there are 4 setting, the 4th setting gets weak as time battery goes by, but the led lights(settings 1-3) never go weak, i've had it for 5 months, havent need to change batteries yet.
this is a great product. works well.the service i recived was outstanding.i sure would recomend this product and service.
so he didnt have to hold the flashlight but the elastic is cheap and breaks, doesnt adjust and the light burnt out in a week..what a joke
What I received looks like the picture except there is no krypton bulb in the middle. First off, the lamp did not work. Then after getting it to flicker a few times I figured out that the switch is the type that turns off if power is disrupted. Same principle that table saw switches use. So I figured the battery contacts on the PCB were dirty. Cleaned them with a q-tip and alcohol and it worked.
We got these for our grandchildren and some of the BIG BOYS!! We gave them to them on the fourth of JUly for a great evening of fun outside!! They really had a good time and then used them at home for fun on the evenings when life got a little boring ...they shut off all the lights and played hide and seek!! !
We bought this thinking it would be perfect for my husbands job but, it turned out this thing only staysbright for a few minutes then it becomes useless. I guess you get what you pay for!
The 9, bright white LEDs put out a lot of light. The unit appears well made, and for the money this is just a great deal.
So far so good. It is very helpful when I can't hold a flashlight. I hope it lasts a long time.
Real bargain, good quality and it really lights up the road. You can see, on a really dark place, up to 10 meters
Once working I found that the there was no krypton light as advertised. So much for the 100 foot range - more like 15 feet. Now if you only want a low power, low light headlamp this is probably fine - if you get it working first. The only LED in this unit are the cheap 50mm dome topped mini LEDs - about as low end as you can get. Certainly not what was advertised.Next issue was it was supposed to be a 4 function switch.
Answer: no