Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: How well it work when fuction as noise cancellation?
Document: I expected better quality sound. Noise cancellation is pretty good though. Generally speaking for day to day purpose it is ok
I was looking for a new pair of headphones to use at work which would deliver great sound and some noise-cancelling qualities. I spent many hours researching headphones based on dollar amount, features, and user review comments. After coming across these I was taken aback at how many high-star reviewers there were.
Travel occasionally for work. Needed noise cancel headphones for movies on the plane. Didn't want to spend crazy money for something I don't use much. The sound is fine, the noise reduction is good, likely the seal over the ear helps too. The cord for this thing is so long its annoying. I am using a rubber band to keep it in control  If you are looking for a good deal, decent quality and have a spare rubber band - buy these.
This comes with the larger adapter that screws on. However, I found that since the jack has a larger base to allow the adapter to screw on, it didn't work well with my iPhone case. It worked find with my iPad and other applications, but I'd be cautious of size of what you are using.Removable cord:This does not have the removable cord that the 40x and 50x has, which would have been really nice.
Good price, great headphones, crystal quality, comfortable around head mostly, a little tight on glasses frames at first but you get used to it.I got these to block out my awful coworkers, rather than jamming my iPod earbuds as deep as possible towards the ear drum and then setting them to max volume.They work fantastic at that purpose. They are not 100% noise-canceling. I can still hear voices and sounds around me, and nearby noises.
They are big and bulky, but really comfortable. The ambient noise isolation and the sound quality are very good. They also seem well made and robust.
Very comfortable and with excellent sound. Blocks out most outside noise. Appears very well made.. Easy to adjust.Far superior to any previously purchased headphones.
For the price these headphones are great! They have great range, good bass, and are clear of static or background noise. The material is sturdy and they seem well made. I carry them around with me without worry of damage (this was a must for me).
I was looking for a few things in a set of headphones and found them all here. Well, almost all, but I wasn't gonna pay for noise cancelling due to cost so I passed on that. But even here the wraparound design does a decent job! I wanted and got: *Long enough cord (9' +/-) so I can sit back on my PC or stand up while playing my electric guitar.
I really like the way these headphone fell. They are well balance, light and sound great. This is my first headset in a decade, I had moved to earphone for portability, but when size is no issue these are great. The do a good job of reducing noise and not feeling overly snug. The only thing I would change... the length of the cord, I believe it is 9 feet.
Answer: Funny you ask......i just mowed my lawn with them yesterday. They block out enough noise that i dont have to turn them all the way up when mowing the lawn. I have a 22HP ride on mower so it is loud.....and i listen to pandora on my samsung s3 one or two notches from the loudest setting. I am able to hear the music perfectly clear. Hope this helps.