Sound from iPhone is the best smartphone can have but there is always better way to listen your music without phones or on iPhone speaker! With Portable Amp for iPhone made by BONE there is no electricity, you get quick ship from USA and you get higher quality than other Portable Amp for iPhone in different colors! Colors that are on disposal are black, green, red , white, blue, yellow purple and many more. Please note when you ordering to specify color to get what you deserve! Dimensions of this Portable Amp for iPhone are 1.75 inches, 4.25 inches and 5.25 inches with weight of 1.44 ounces!