Seiko Prospex SPB409 Alpinist GMT Limited Edition White Accutron the 24-jewel automatic movement beats

the 24-jewel automatic movement beats at a frequency of 21

Unidirectional black ceramic bezel with SuperLuminova BGW9 markers

Hands: Lumibrite on hands and index(es)

minute and second hands and dial for night reading capability

Diameter: 40

Seiko Prospex SPB409 Alpinist GMT Limited Edition White Accutron the 24-jewel automatic movement beatsCaliber Number: 6R54 Movement Type: Automatic with manual winding Precision: +25 to 15 seconds per day Power Reserve: Approx. 72 hours(3 days) Jewels: 24 Case Material: Stainless steel (super hard coating) Case Thickness: 13. 6mm Case Diameter: 39. 5mm Lug to lug: 46. 4mm Crystal: Curved sapphire crystal Crystal Coating: Anti reflective coating on inner surface LumiBrite: Lumibrite on hands and index(es) Distance between Lugs: 20 Water Resistance: 20