Seiko Alpinist Prospex Automatic Watch Green SPB121J1 Leather Strap. Watch with steel case with a diameter of 39.5 mm and a thickness of 13.2 mm. Stainless steel bezel with polished and satin finish in silver color. Green dial with date display, curved sapphire crystal and anti-reflective coating on the inner surface. Lumibrite on indexes and hands. Screw-down and transparent case back. Screw down crown. Automatic movement with manual winding capability of +25 to -15 seconds per day with 24 jewels and stop second hand function. Caliber 6R35. Brown calf leather strap with buckle closure. Water resistance of 20 bar, delivered with original box and official guarantee.