Seiko Prospex Automatic Samurai SRPB51 Eterna Lady Kontiki Diver 38mm Automatic and the fact that both

and the fact that both the caseback and the crown are screwed into place

It has a hand-assembled movement

Track your extensive travels on the mirror-polished 24-hour GMT bezel

Movement: Sellita SW200 with Incabloc™ Shock Absorber

Waterproofing: 50m / 160ft

Seiko Prospex Automatic Samurai SRPB51 Eterna Lady Kontiki Diver 38mm Automatic and the fact that bothSeiko Prospex Automatic Samurai SRPB51 Hand And Automatic Winding Capabilities 21,600 Vibrations Per Hour Power Reserve: 41 Hours 24 Jewels One Way Rotating Elapsed Timing Bezel Lumibrite Hands and Markers Day Date Calendar Screwdown Crown And Caseback Caliber 4R35 Size 44mm Screw Crown & Case Back hardened mineral glass 200m water resistant bracelet: 3 link steel bracelet, Three fold Clasp with secure lock, Push button release with extender