Seiko Prospex SPB381 Sea MM200 Automatic GMT Green Masterpiece Powered by our H-10 automatic

Powered by our H-10 automatic movement

The top of the bezel is made using the cobalt alloy COBARION®

Additional red

Caliber 4R36

Seiko Prospex SPB381 Sea MM200 Automatic GMT Green Masterpiece Powered by our H-10 automaticCaliber 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 Band Case Material: Stainless steel (super hard coating) Case Size Thickness: 12. 9mm Diameter: 42. 0mm Lug to lug: 48. 6mm Crystal: Sapphire crystal Crystal Coating: Anti reflective coating on inner surface LumiBrite: LumiBrite on hands, index(es) and bezel Clasp: Three fold clasp with secure