Seiko Prospex Sea Black Divers Automatic GMT Stainless Steel 42MM Watch SPB383J1

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

24-hour hand

Stop second hand function

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

Water Resistance: 200m / 660ft diver's

Magnetic Resistance: 4,800 A/m

Weight: 176.0g

Unidirectional rotating bezel

Screw-down crown

Three-fold clasp with secure lock

Screw case back