Seiko SSK001K1 GMT Black Grey

Automatic GMT with manual winding capability

21,600 vibrations per hour

Power reserve: approximately 41 hours

24 jewels

Black and gray 24-hour GMT bezel

Black dial

Magnified date calendar

Luminous hands and markers

Large GMT hand for improved visibility and legibility

Screwdown see-through caseback

Case diameter: 42.5mm

Stainless steel case and stylized five-row bracelet

Tri-fold push button release clasp with lock

Water-resistant to 10 bar, 100 meters (330 feet)

Caliber 4R34