Inside was a beefy 4 Ohm 3W speaker, with a 3W Audio Power Amplifier LM4871 with Shutdown Mode. Now my brand new AirPods are ruined because of this cheap case. Every toe has been broken at some point during his career, none point in any really healthy direction, and two are constantly complaining regardless of the quality of boot or shoe he buys. This equalizer really changes the way these headphones sound, this aint no gimmick! Sadly my daughter used it less than a handful of times. This thing is incredibly Loud which is great for me cause i love my loud music and to be honest i purchased this to piss off my neighbors and its definitely done its purpose so high five on that note ?? ! I?m not much for light bars and all that when it comes to off-road vehicles. I have to say that at first I was not sure I liked this belt and it was a little too big. Found these and I think they will be nice thru winter. Stopped working just 2 weeks ago hardly use it only for the weekends so not happy with it now my sound is bad and loud