WR: 20 ATM - Case: 45 mm - Gender: Men - Case Material: Stainless Steel - Strap Material: SS Bracelet - Functions: Date - Glass: Sapphire - Product Type: Wristwatch - Product Description: The Seiko Prospex SPB103J1, affectionately known as the "Sumo," is a distinguished men's automatic diver's watch that exemplifies Seiko's commitment to precision and durability. Featuring a striking green dial and robust stainless steel construction, this timepiece is designed for both underwater adventures and everyday wear. Key Features: Movement: Automatic with manual winding capability, powered by Seiko's caliber 6R35, offering a power reserve of approximately 70 hours.Case Material: Stainless steel with super-hard coating, ensuring enhanced durability and a polished appearance.Case Dimensions: Diameter of 45mm, thickness of 12.9mm, providing a substantial yet comfortable wrist presence.Dial: Sunburst green dial with Lumibrite on hands and indexes for excellent visibility in low-light conditions; date display at the 3 o'clock position.Crystal: Sapphire crystal with anti-reflective coating on the inner surface, ensuring clarity and scratch resistance.Bezel: Unidirectional rotating bezel with a green insert, allowing precise measurement of dive times.Bracelet: Stainless steel bracelet with a three-fold clasp and secure lock, featuring a push-button release and extender for easy adjustment, ensuring a secure and comfortable fit.Water Resistance: 200 meters (660 feet), suitable for recreational scuba diving.Additional Features: Screw-down crown and case back for enhanced water resistance; the watch also includes a stop second-hand function for precise time setting.SpecificationValueWR20 ATMCase45 mmGenderMenCase MaterialStainless SteelStrap MaterialSS BraceletFunctionsDateGlassSapphireProduct TypeWristwatchPackagingOfficial Box