Prepping made installation fairly quick. - die Passgenauigkeit ist genau wie erwartet. Fit as expected If you buy this same thing in the medical equipment section it costs over a hundred dollars. A higher button is the volume down/back button. I?m an 8 in regular shoes and got the 7/8 - the heel slips a little bit but would probably be too tight otherwise. 5 mm stereo jack for aux input, micro-USB for power to charge, and a TF (micro-SD) card slot for music storage. Also when you put the battery into the finder use the tool to insert into the indented part and turn. Love the material and designHave two of them and they r sturdy and look great in my bathrooms This was super cute!