Seiko SPB377J1 with automatic mechanical movement, caliber 6R54. Approximately 72 hours of power reserve. 24 rubies and 21,600 vibrations per hour.

Stainless steel case and bezel, diameter 39.45 mm. Transparent screw-down case back, providing water resistance to 20 bar/200 meters. Thickness of 13.55 mm. Width between the lugs of 20 mm.

Slightly domed sapphire crystal treated with anti-reflective coating.

Blue dial with lumibrite-treated indexes and hands for viewing in the dark.

Date window between 4 and 5 o’clock. Logo at 12 o’clock.

Blue calfskin bracelet with folding clasp and convenient release button.

Accompanied by official Seiko packaging and 2-year warranty.