Seiko Prospex Sumo Silfra Limited Edition SPB431J1 steel double strap men's watch. Watch with steel case with a diameter of 45 mm and a thickness of 11.7 mm. Blue and black dial with sapphire crystal, anti-reflective treatment and date display at 3 o'clock. Unidirectional rotating bezel in blue and green. Screw-down crown and caseback. Automatic movement with manual winding capability, power reserve approximately 70 hours. Caliber 6R35. Lumibrite on hands and indexes. 24 rubies. Silver-colored steel bracelet, with triple folding clasp with safety lock. Double blue accordion silicone strap. Watch with 200 meter water resistance, delivered with original box and official guarantee.