Bass and Treble adjustments in app. Excellent construction, and well worth it. These are especially nice light up shoes bc the lights are on the toes so the person wearing them can actually see when they light up versus when they are on the sides of the shoes. Not to mention they are very much on trend right now. She loves the case! It looks nice, and it does "work" - but I wouldnt recommend it. Size is something very peculiar now a day, for every brand I have a different size, but since I do have different colors of this same loafer I did know what to buy. not quite as comfy as other sketchers ive had but ok they look cool. So far the build quality is what was to be expected from Classic Swiss Logitech.