Would the noise muffling factor of it still work if there are no batteries?
1120593
Yes, they just become ear muffs. I use them as such when mowing the lawn, or using power tools.
1120594
Yes, the batteries are for the voice activated speakers & mic. The ear protection is in the ear muffs. It will be hard to hear someone talk as they work really well.
1120595
You do not need the batteries to block sound and these muffs are very good at blocking loud noise
1489387
No, for all practical purposes. There is a very, very soft buzzer. Unless you are working in a very quiet area and are listening for it, you may not hear it.
572485
Elisa, they do work without any music playing but you do hear a not more of the surrounding noise. The more expensive models I have tried do a little better job without music. But not considerably better.
1880881
Yes they will work wired without power. However when using the Noise Cancelling feature they will use power from their battery. So if you were trying to use the Noise Cancelling feature with a dead battery you would be out of luck. Otherwise you can simply plug them into any source and listen away.
1303168
No it does not make any noise, however, if you have any kind of case it will likely not make it through the case. It does not have enough power to do so, if you have no case you should be good.
155747
The manual says "When the batteries are nearly empty, the battery indicator blinks", it does not mention anywhere a sound. http://download.p4c.philips.com/files/d/dvt5500_00/dvt5500_00_dfu_aen.pdf
788583
Very quite. With road noises and any audio, this is typically not heard at all (even with no audio, noise is minimum)
1289048
There is no noise unless you use the battery operated blower and even then it's a low hum. I've only used the blower once as I don't feel it's needed.
2222004
I use mine in a noisy environment and I can hear it just fine. This is small and it runs on 2 AAA batteries and it has an output of about 2 watts using a class D amplifier.
133136
There are few big colourful "button" and by pressing each button will produce a tune. There is no turn on/off. If you don't put battery then it would be no sound.
1130655
No, Frank I don't think it makes a purring sound or moves or anything; it's just a fluffy toy, so it does not need batteries
1326906
It isn't to me , and you could always leave the batteries out of the part that does make sound
818794
Not really but it does makes squeaky/feedback sounds even as soon as batteries are in
305127
I don't think so, but the sound is so soft you wouldn't hear it unless it was close. I carried it with me to whatever room I was in.
389601
It is not really noisy, but you can kind of hear it a little bit, don't think it would be a problem.....just kind of a hummm.
1439106
Someone sitting right next to you will be able to hear it a little bit if you have it cranked way up, but overall they contain sound well. The batteries last a long time. I got about 30 or more hours out of mine and use with noise canceling on most of time.
784186
No. They're closed back, so the sound is mostly muffled to an outside listener. They'll hear something if you have it loud enough. But they're mostly isolated.