Lightweight but ergonomically designed so it fits beautifully. Also a twenty component crown stem so that no matter where you start screwing the crown in from it will always have the AP logo on the crown in the perfect upright position.
Fabulous choice - I'm a bit heavy on the Perpetual side - Otherwise the RD2 would be a dream choice. Titanium, ultra thin, special dial, RD designation - win win win. Enjoy!!! Peter