Seiko Prospex Watches Mod. Spb101j1 Official Box Product Description: The Seiko SPB101J1, commonly known as the "Sumo," is a distinguished men's diver's watch from the Prospex collection. It combines robust construction with precise automatic movement, making it a reliable companion for both professional divers and watch enthusiasts. Key Features: Movement: Seiko 6R35 automatic caliber with manual winding capability; approximately 70-hour power reserve.Case Material: Stainless steel.Case Diameter: 45mm.Case Thickness: 12.9mm.Band Material: Stainless steel bracelet with a three-fold clasp and secure lock.Dial Color: Black with Lumibrite hands and markers for enhanced visibility.Crystal: Sapphire crystal.Water Resistance: 200 meters (suitable for professional diving).Functions:Date display at the 3 o'clock position.Unidirectional rotating bezel for dive time measurement.Screw-down crown and case back to ensure water resistance. This timepiece reflects Seiko's commitment to quality and innovation, offering a durable and stylish watch for diving professionals and enthusiasts alike. SpecificationValuePackagingOfficial Box