This is an excellent speaker for the money! The Bluetooth range and connection strength is great. It plays music from a flash drive just fine and has very decent fm tuner reception. I have a JBL, but this has a much better range of music and lots more bass. It actually has a thump! I have operated it for roughly 6 hours, and the battery meter still shows 2 out of 4 bars, half charge still. The led show it emits is interesting, but I’m I'm in it for the tunes! Very impressive for a low cost speaker. Very good quality and anxious to use it at my bonfires!