Summary: It's a good, convenient battery-powered speaker. Yes, it has an AC adapter, but it's easy to carry around the house if you use batteries. Lately, though, it seems to have forgotten how to turn off. You have to pull a battery out. Stupid, huh? Except for that, works well. We use it for listening to audiobooks, so sound quality is less of an issue.
Summary: I'm surprised at all the good reviews. As a Bluetooth device it works great. As a speaker it sounds like cheap PC speakers sound. My daughter gets a better sound out the built it speakers of her Macbook Pro.
Summary: Considering that I am using this unit in a large room, and the sound is quite good. I connect using Samsung S4 from about 30 feet away (unobstructed) and the connection is perfectly reliable. I am not crazy about the interface, which is just volume and power, but it works. Overall, I am very satisfied with it.
Great Sounding Affordable Bluetooth Speaker NOT 18 Watts RMS. 3W + 3W RMS
22 September 2014
Summary: I purchased this from the Lenovo website and just received it today. This is NOT 18W RMS. It has two speakers each rated at 3W RMS as stated in the user manual. Unless someone opens their unit and gets the read out from the speakers themselves it will stay at that. But overall the sound quality is good with plenty midrange and poppy bass at 75% volume. AT 100%, the music becomes somewhat distorted and the music is less refined.
Summary: I ordered this item direct from Lenovo and used the Amazon Payment option. The price I paid was about what it is selling for today on Amazon and my rating is based on that heavily discounted price. I wanted to try a speaker with replaceable batteries and this fit the bill. The whole package, including four AA rechargeable batteries ordered separately, was less than $35 (I already had a battery charger).