0V to 5. Shes keeping it. The screws they provide you is correct. Co worker loved the bread concept All day comfort and style with no foot pain at the end of the day! LA batería dura muy poco Acquisto top! Its not up there with the very best of mics but then nor is the price. The curved plastic piece sits inside the rubber base. I love that the phone case is magnetic and pops in and out easily.