So if your on the fence between international and US version. The battery lasted a few hrs on a full charge. Im usually a 9. 5 size instead of 3, having said that if I wear with thing socks its fine. Unfortunately both hers and her husbands pairs got left in the conservatory in the hot summer weather. The Sony MDRZ7 doesn?t even want to get near the treble area. Pros:- Sound QualityCons:- When battery is low the headphones constantly tell you "battery is low" which makes them unusable below half power- You have to cover the indicator light with your fingers when using the buttons making it impossible to see when operating buttons. For music, in the house, side by side then the Sonys win hands down, a different league. My other pair are unisex, as these say they are, and I compared both boxes and markings on the shoes closely. I got the pumpkin orange color and its true to the color on the site.