Seiko Prospex SPB381 Sea MM200 Automatic GMT Green

Caliber 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 lock , push button release with extender

Distance between lugs: 20mm