Known for their high quality timepieces, the team at Richard Mille are bringing that same attention to detail and tech to the world of fountain pens. The Richard Mille RMS05 Fountain Pen's barrel and cap are made using the same material that is used in racing yachts. And it's also outfitted with a genuine, manufactured calibre — just like the movement you'd find in a Mille watch. It's used to extend the pen's 18k gold nib with the push of a button. It's then reset and rewound when capped. It also comes with microblasted and satin-brushed surfaces, circular-grained and rhodium plated gears, as well as handpolished angles, locking sections, and sinks. It's not a leap to say this is the most sophisticated fountain pen we've ever come across.