The 600 series features traditional Rotring Bauhaus styling, Distinctive hexagonal barrel. the 600 is heavier than many pens, yet well balanced to write with. Sturdy all metal construction. Contoured gripping section, snap cap mechanism.
Never leave home without a pen. And if you're going to write something do it with style. This is the Rotring 600, one of my favorites, but isn't made anymore. You can find one or something equally swanky on eBay.