Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: What is the reach on this? Does it produce a wide or a narrow beam? Also, can this be mounted on bicycle?
Document: The screw needs to fit in the hole to fix the lamp, but it is too short to reach it.The lamp is bright, but the overall is not a good product.
It puts out a lot of light and it is rechargeable. Great if you are fishing and need your hands free. Also great for car repair when you need both hands.
Yes it works great for the type of work i do !! I'm an A/C man and spend a lot of time crawling around in attics and under mobile homes, and it also comes in handy when working on units after DARK !! !
...I miss the zoom and the strobe setting is nothing but a nuisance. Also it seems a tad heavier and bulkier then need be. Those are smallish gripes. The tilt and switch work very properly with quality feel. For some $16 including charger and lithium batteries it's a bargin. Easy 5 stars for the buck if it lasts well.
the defect was prior to 30 days). I also argued that for a $15 dollar item I can save everybody probably more than $15 (and me the annoying efforts of boxing and driving to UPS) if I just don't send it back and they issue a refund anyway. Amazon agreed. So I got a refund, and I don't have to sent it back, which is nice.
Still, be careful out there. Know what you're doing, and pay attention to what you're doing.My battery labels say the batteries are protected - meaning they each have little protection circuits in them to prevent over/under charging. Those circuits might also throttle the discharge rate in the event of a short circuit - which might prevent or reduce the potential mahem if inserted wrong. I'm not about to test it out though.
The web page specifications also didn't specify voltage (implying whether the cells were in parallel or series). There were no instructions. The charger says "4.2 volt +- 0.5 volts" and 500 milliamp. It's a wall-wart type with a wire that plugs into the battery holder on the headband. The batteries claim "3000 mAh" on their labels and "3.7 volts". The batteries say "With Re/Discharging Protection Circuit".
This headlamp is not only well thought out and powerful but at the right price. I waited until I had a dark night and opened my front door to see how far the light would project and it lit up all the way to the front gate (about 50 yards). Seems to last long also. MADE IN THE USA. I liked it so much I went over to the lightbulb section on Amazon and ordered some CREE led lightbulbs.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~WARNING - DON'T put the batteries in the wrong way!The batteries are wired in parallel when they're inserted properly (supplying 3.0-4.2 volts to the lamp).
works on one or two cells. good to know.On one, twisted head lamp to open and inspect and it like made a crack noise and that was the end of it.I would not  use for life or death uses or carry a backup or two
Answer: no