The Studio is a design by Hannes Wettstein. It is a cartridge/converter premium line model. The metal body and cap are offered in various coloured painted or metal surface finishes. Most versions have chromed round grip sections. The palladium plated version Studio version grip section has a deviating palladium plated grip section. The brushed stainless steel bodied and capped Studio version grip section has a deviating non-slip black grip section. The piano black and palladium Studio versions are more expensive as they feature nibs containing gold. In addition to the fountain pen the Studio line is also available in a ballpoint and rollerball pen configuration.