I bought this lens cover for Sony RX10, because I wanted a spare protective cover with cord - the original cover can be fixed no cord unfortunately. Against this cover I had a protective cover from Hama concerned, but which (for the RX10) proved to be a bad design, since the cord is when securing the lid always jammed with the lid and thus does not hold true! This problem does not exist with the cover of Kaiser! The lens cover closes properly and the cord out of the way. Even if the cap fits well - the clamping mechanism wikt of a processing perspective, something cheap (much worse than the original but also worse than the cover of Hama). There's a star deduction!