Like on some products from other suppliers, there is also here point deduction for the design flaw on the right side: The guide Knew so far pulled up that it clamps the rocker switch for volume. This may result in the inserted state means that the volume is turned down to 0. Remedied but a handle for round file to give the perfect finish to the holder ...
According to figures, it now seems probably an original variant to give with slot on the right side - for me this was not the case.