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Input:
Question: Do you need to have the battery in just to listen to music and talk on phone?
Document: Had to upgrade my phone to get them. I fly a lot and need good noise cancellation. With Samsung Galaxy S3 the sound was really quiet. Upgraded to S4 and the music is a lot louder
Over all it is a perfect headphone when you go travelling. The only limit is about the battery because when you listen to the music the &#34;Noise Cancelling&#34; have to be turned on, which means you have to carry some AAA battery when traveling.
I got Bose QC 15 Limited Edition from my work place.Pros:1. Outstanding noise cancellation: QC15 does great job on noise cancelling and makes me fill like I am sitting in my own office even under noise cubical environment (mainly people's talking on the phone close to me)2. Very comfort: I can wear it for a couple of hours comfortably3. LightCons:1. The sound is okay: I was surprised when I listen to a song with QC15 from my iPhone.
I personally preferred the Sony sound but that is a matter of taste and either is fine for the average user. Unlike the Bose, the Sony can be used even if the battery is dead, but as a practical matter the audio quality is so degraded that you probably won&#8217;t want to listen for long.As for nose cancelling, the winner is&#8230;I couldn&#8217;t tell a difference.
first listen the noise canceling is pretty good.then after two weeks daily use  the noise started to penetrate and not as good as the first time I listen to it.say,when it's new it's very good performance and then begin to degrade.some says its because the battery is used up.or the insulation shell is begin to loose.Overall it's still quiet under it. Plus the money Worth 4!
While I will surely use these for listening to music and flying, my main motivation for buying these was for use on conference calls.I have an office within my customers headquarters which makes it hard to take conference calls on a speaker phone (and I consider closing my door for what can be put to 2 hours, rather rude). It isn't fun holding a phone that long either.
A piece of advise though, make sure you read the instructions regarding the HI/LO function, it really makes a difference when you listen to music on your portable device or a home system. If the sounds quiet and you're halfway on the volume control you should probably change the setting to HI.
I heard everyone and they heard me! My only small complaint is that when I spoke my voice was muffled to me so I may have been speaking louder then necessary. I'll get used to it. They were very comfortable, even wearing earrings. Sure the people around me thought I was listening to music and ribbing me, but with the phone on mute I was able to explain.In addition the case is great for keeping them secure (though it smells a bit funky....) and protected.
Having purchased several sets of headphones over the years it is clear (to me) that Bose is at the top of the line concerning sound clarity, comfort and quality of construction. I purchased a set of Beats by Dre for my son and have to admit they sounded pretty good at first because of the increased bass, however if you want to listen to Steely Dan or similar quality music, drop the Beats and put on the Bose.
These headphones are super comfortable to wear for periods of long times. They are crisp and clear and the noise cancellation is excellent. I gave them 4 stars because I like to listen to my music quite loud, but I also sit on the couch by my boyfriend while he is watching TV, and when I listen to my music it is quite loud for him just sitting beside me. Would be nice if they could come up with a design that keeps the audio more confined to the headphones.
Answer: Yes. One AAA. They last a long time. I carry a spare in the case.