Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Can you use it while plugged in without the battery in it?
Document: Great! I was impressed by the volume and the quality of the sound. Amazing how much volume this speaker can put out without distorting the sound.Rather hard to turn on and turn off (having to hold down the button for four seconds...seems like much longer. Worked with Bluetooth to my Samsung Galaxy S3 phone with no problem and my laptop. Also, works great plugged directly in to the phone or computer hard wired. Comes with all cables and charger.
Easy Bluetooth pairing (using iphone 5, iPad, macbook)Nice and compact. Easy to toss in workbag and carry around.Amazing sound for such a small affordable speaker.I was pleasantly surprised by the speakerphone feature. I was able to use siri through the speaker without being near my phone (ie. "call dad")
I use it all the time,eazy to sync, good battery life, small size with good sound. Perfect for travel can't beat it :)
Killer feather for me was the aux out I use it all the time. Battery last a very long time and the speaker sound very good for 45 bucks you can't beat it. Very pleased with the device.
easy to use, and fast shippoing, battery life is a littel short but the sound is great.the only thing I would recomend is a better box for protection but thats the factory problem.
get it case closed.....they are loud and sound good for what it is, small can bring anywhere, can use as a speaker phone or a party in you pocket, i use it to detail cars leave it in my trailer and can still here it from 15-20 feet away, long battery life, and just looks cool,
They are so small you could carry a few for a extended camping trip where the nonremovables would be done in a day. A big reason why I left the iPhone because battery management was a PITA. So the only other factor to decide would be how the unit holds up to use. So I'll check back in a few months with an update.
It fits pretty much wherever you'd want it, small but not too small, seems to have good battery life (only one day of use so far, but good for now) and definitely puts out nice sounds. I'm not an audiophile, so I'm not talking about technically perfect sound, just about sound that makes my ears happy.
She can set her ipod in our room and walk across the house to the kitchen to where the speaker is and still get good connection. So as for the connectivity of the device to the speakers, pretty darn good. The instructions are a joke. If  you have any brains you can figure them out, but some detailed specifics on how long to charge the battery for initial use, and stuff like that it would be nice to have.
I love it. I like the long battery life. The fact that I could use it as a speaker by itself or I could hook it up to home theatre system is just great. Having the feature that turns it into Bluetooth receiver is unique to this  speaker. Last thing the stereo speakers sound great for its size. The price is just right.
Answer: Yes. Just got mine today -- it plays with the battery removed if the usb is connected to power.