I am using it since one year, the performance has not yet deteriorated. Like the name it truely is a stone. I have dropped it many times but yet not damage? it kept on playing. Bass on this speaker is very much decent. Loudness is ample for a room. I even use it as a wired speaker for my Laptop better than the cheap speakers out there. The only drawback of this speaker is that it beeps at intervals on battery low ehich is quiet irritating….
Long Story short- go for it if you are getting any offer price online…. DO NOT miss it