Not Great. Could be louder. Eats batteries.
928110
The remote is okay. Supposed to reach to 50 yrds. Might go 50ft. Eats batteries in both remote and caller. Sounds are not very lifelike either... I have better luck with manual calls.
4372572
It's not unbearable but DON'T turn it on when it's in your ears. That voice and beep is LOUD! Also the sound cracks once in a while. And the battery life last around 3-5 hours instead of the 8 hours it promises. If I didn't get this for nearly anything when buying it with my speaker, I would rate this lower.
1181910
The input gain adjustments are very sensitive and the slightest movement changes the signal by several db's.  Also the battery life is awful.  If you need to record a 1-2 hour set it should work on a full charge.  If you have several DJ's playing through the night, it will never make it without a battery swap.  So you need to watch your battery level and try and time it with a change over, then hurry up and power down (not fast) swap batteries and power on (not fast) and start recording again.  Also, it cannot record over 2GB file sizes, so while it has high resolution possibilities you will hit the 2GB mark before a set is over if you use them.  I settled on 44.1khz stereo waves (turning on the built in mic adds to battery loss again).  It does automatically start a new file, but you will have to splice them back together in post.  The build quality is nice, the sound quality is ok, but it seems like the decent hardware was poorly executed and the end result is a lackluster product I spend more time fiddling with and checking up on rather than trusting it.  I am going to try a different brand/model and see how it fairs.
3105645
Definitely not loud enough for the $30 price tag. Save your money. Try something else.
4202069
I bought this radio for around the house listening and have been less than satisfied.  The batteries should have lasted longer than they did and the toxic plastic smell coming from this unit is a problem for me.  I have a hard time tuning it, the other radios I use are easy.  No great investment but a great disappointment.
1620149
I bought this wanting a cool walkie talkie to play airsoft with that had good sound quality, portability, and good battery life. I got 2 of those things. It's light, the sound is OK, but the battery is not very good. It went to low battery after about 10 minutes of using it. Also, when i held both talk buttons together, it made my woofer (on my radio) start vibrating rapidly, which isn't good. But if you are looking for some cheap walkie talkies that will work, buy these.
2986174
Fails for a very simple reason. It isn't loud enough to be heard in a moving car. (Scion xD) The car isn't very noisy but even at full volume I couldn't hear my caller.

Has several nice features like the removable battery but it's simply unusable.
1401201
Hmmm... well I love the fact that the battery is removable and replaceable, BUT! 1) the battery is super touchy when in place -- if you push on the door compartment, it makes the device shut off and power on again. 2) the sound is awful -- it gets loud, but has about 2 out of 10 when it comes to bass.
4269846
Obnoxiously loud - and there is no volume control (??!). Battery life is ~1/2 hour at 30% brightness. Other than these, it works.
2015147
The voice letting you know the headphones turned on is always at max (painful/deafening volume) regardless of what you had the volume set to when you turned it off. There is audible high-pitched mechanical hum while the headphones are on. Constant music can cover it up, but it is audible in musical lulls or while listening to other things such as audiobooks. It is akin to a tinnitus ringing sound and just as aggravating. (Yes, I am certain the ringing sound was from the headphones--it stopped as soon as I took them off or turned them off.)
I have no idea how good the battery life is because I didn't last ten minutes with these. Returning for refund from Amazon.
Additionally, they can only pair with one bluetooth device at a time. You must actively disconnect or turn the bluetooth off on the first device before you can connect to another device. This was only an annoyance, not a deal-breaker, and I would have kept them if this had been the only problem.
4266923
Not much fun to insert the batteries. especially if it is a bit cold. There is no visual assurance that the battery is in correctly but there is generally a slight humming sound when the units are on. They seem to work really well for five stand and skeet shooting. Much better option than muffs but not as convenient or as easy to use.
1777634
Bought to use on motorcycle and lawn mowing.  Does not cancel ambient noise.  Hard to operate with its own on/off switch.  Drains batteries too fast.
4962732
The default sounds from the device of power on, power off, device connected, volume adjustment, etc. are TOO loud and annoying. Cannot adjust it. Bad design.
I assure you that the "battery low" sound would scare you to freak out!
210828
Misses: Very Loud when first turning on.  Lowest Volume setting still louder than wanted.  Battery does not last a full night for baby room white noise.

Hits: Size, SD Card.

I haven't used the Bluetooth or USB functionality, so those have no impact to rating.  Would rate higher if battery lasted longer and volume was more adjustable and less blaring on start.
4830471
The AO Safety/3M Worktunes have been ok in every aspect but one. When the batteries run down it causes an earsplitting alarm. I complained to the company about the irony of a hearing protection device damaging my hearing with an unneeded alarm. Their reply was that there was nothing I could do the disarm the alarm and that is was not really loud enough to damage my hearing. Baloney! After two years they will not operate for five minutes before the alarm sounds. I do not reccomend this item.
286354
My wife bought me this as a gift since I like to listen to music when I go to bed and she likes it quiet.  Overall its not bad but there is one MAJOR flaw.  These are designed to be worn when you sleep.  HOWEVER when the bluetooth speakers begin to lose power it will announce VERY LOUDLY that the "Battery is Low".  If you fall asleep with these on (which they are designed for) its quite a rude awakening when it blasts the low battery warning in the middle of the night when you are sound a sleep. So you better make sure you charge it fully every day before you wear them.  Also the buttons are very loud when you click / push them.  More annoying than anything.  It's a little tight (and I'm average size) and the speakers move around.  This isn't so bad as you can adjust them to your ears.  They need more cushioning as they can begin to hurt the ears when the padding moves, which happens easily.  I had ordered another one of these that was just a headband before and not the eye mask.  That one was terrible.  I looked at many of these and realize that most of the cheaper ones are all basically the same speakers with the same button labels.  Just branded differently.
4781206
For some reason my son wanted it and liked it.  However, after he tried it and the sound was loud, it no longer was loud by the time I had come home.  Okay, I'll replace the batteries.  The AAA batteries with it are thinner somehow then the two name brands of AAA batteries I have.  Any AAA batteries are too thick to fit in the battery compartment.  I can force them in but then the spring can not budge them so the + contact can never touch.  That is dumb so I returned it for another in the hopes that the next one does not have that defect or come with dead batteries.