A great device! Technically, everything’s spot on. However, there are four quite noticeable scratches on the casing. They’re about 1–2 mm deep and 10 cm long. I haven’t tried it yet, but perhaps they can be removed by polishing (sanding). As the technical aspects are more important to me, though, I can live with it. That’s why I’m giving it ‘only’ 4 stars.