Incredible sound, volume and quality for $60. You can't do any better finding this quality for the money. I don't normally write reviews but received delivery an hour ago and the construction is solid with a rubber sleeve around the device. The sound is as rich as any Bose I've heard and the 40W volume fills the room. I'm really excited about the sound quality. It amazes me. If you are looking for a speaker, you can easily buy it. I probably spent 3-4 hours looking at the Revain speakers and they fell between the M4 and JBL, but I didn't want to pay for the JBL name and I felt the M4 offered more bang for the buck. 24 hour battery, 40W power, waterproof and memory card slot. What else do you need.
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