Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: Does this lamp fit on a hard hat?
Document: comfortable to wear with ball cap, hard hat or none. very bright,  it illuminates even the darkest crevices. easy to adjust size and light intensity.
Bought one for my dad he works in refineries and is always needing stuff like this he liked it so much he had me rose 2 more to give as gifts lol he says it's sturdy very bright great battery life doesn't slip when he wears it on his head or hard hat and he recommends it to everyone
I'm in construction, I often work nights, I strap it to my hard hat. Works really good! Battery time only works three hours on full power though, so I set it half way, works good. If I'm on the day shift, I'm in dark attics, again works super! !
I have own one for over a year. I work with machinery in dark  automated wear houses . I spend long days at work 12-15 hours a day. I can keep the light on all day with no problems. If it is on high power then I need to charge it at lunch. I work at temperatures down to -17F. The only problem I had is it was so good some one cut it from my hard hat to take home.
I work in a fleet repair shop that I like to call the cave, because it is so dark and hard to see what you are doing.
The light on this is really really bright. It outshines all other flashlights that I or my coworkers have, even the surefire flashlights. I do have a XXL head though and it is just a bit too tight when I wear it too long, but I'm sure it would fit most just fine
love the low light feature but hate that limited lens positioning. it is quite bright for its size and the adjustment lever is a convenient way to adjust the intensity of the light to fit your needs. I'd buy it again but would wait for it to go on sale.
Bought this for my son in law, he does alot of work inside of cars and has a hard time seeing what he's doing. He would use flashlights and small stationary lights, but they were hard to work with. You can adjust the brightness of the light and work hands free. Another bonus is no batteries, he just charges it in the evening and it's ready for the next day - great product.
great lamp, being rechargable is the icing on the cake. Our outdoor activities require a good headlamp and this is it.
I am just looking for a descent head lamp but i am not expecting this to be so bright considering its size.I will definitely use them all the time.
Answer: yes