Summary: They're cheap and they put out decent sound. I had a set of speakers like this years ago. With those, you could plug the audio jack into your mp3 player and it would simply amplify the music. I thought that was the case with these, but it is not so. These MUST be plugged in to a power source via the USB cable (PC, phone charger with USB input, etc) to work. I was a little disappointed when I figured that out. Other than that, they're not bad for the price.
Summary: These speakers are fairly small and inexpensive so you can't really expect to get amazing sound quality. They are a bit tinny but better than the speakers on my laptop. Good deal for $10, they are small and portable so that's a plus. Overall I give them a 4 out 5 simply because of the sound quality. I have other speakers that were of similar size but 4 times the price and have much better sound quality.
Summary: I really only got these to match my Lenovo laptop. Lenovo doesn't really make any other type of speakers. I would have prefered a self powered 2.1 set. The sound quality is crisp and clear, and the design is nice and simple. The only things I didn't really like were the lack of volume controls and sometimes it requires 2 usb ports. I have seen a lot of USB speakers without physical volume controls and it's a real shame. When used with laptops,.