Formex 0331.4.6300.910 Essence Leggera FortyOne Mamba Green Chronometer Accutron and an accurate Spring Drive

and an accurate Spring Drive system make the Grand Seiko Spring Drive Chronograph watch an unexpected luxury

two Spring Drive Spacewalk watches were worn by a Russian cosmonaut throughout a 5-hour-38-minute EVA

this superbly functional watch

making for a sophisticated presence

Case Diameter: 40mm

Formex 0331.4.6300.910 Essence Leggera FortyOne Mamba Green Chronometer Accutron and an accurate Spring DriveThe Essence Leggera is an ultra light and uncompromisingly forward thinking high precision Swiss Made watch. With its subtle structure and a smooth, slightly silky feel, the 40g (1. 4oz) case made of Carbon Fiber Composite was entirely developed in house. Bezel and crown are made of scratch proof Zirconium Oxide ceramic. Unique features, such as the patented Micro Adjustment and Case Suspension Systems, will make the Essence Leggera wear exceptionally