Description Seiko Prospex Sumo SPB103J The Seiko Prospex Sumo SPB103J is a powerful professional automatic diver’s watch designed for serious underwater performance and everyday durability. Part of the iconic Seiko Prospex collection, this men’s watch is engineered to meet ISO dive standards, making it a trusted choice for divers, collectors, and Seiko enthusiasts alike. Powered by Seiko’s in-house Calibre 6R35 automatic movement, the SPB103J delivers exceptional reliability with automatic and manual winding capability, a stop-seconds function, and an impressive 70-hour power reserve. Offering an accuracy of 25 to −15 seconds per day, this Japanese automatic movement ensures precise timekeeping for both professional use and daily wear. The robust 45mm stainless steel case gives the Prospex Sumo its unmistakable wrist presence, while a sapphire crystal provides superior scratch resistance. The rich green dial is paired with Lumibrite-coated hands, indexes, and bezel, ensuring outstanding legibility in low-light and underwater conditions. A unidirectional rotating bezel, screw-down crown, and screw case back reinforce its professional diver credentials. Built for extreme environments, the Seiko Prospex Sumo SPB103J offers 200 metres of water resistance, making it suitable for scuba diving, swimming, and ocean adventures. The solid stainless steel bracelet features a three-fold clasp with secure lock, push-button release, and diver’s extension, providing comfort, safety, and adjustability over a wetsuit. A date display adds everyday practicality to this high-performance dive watch. Available from Linda & Co., Australian authorised Seiko Dealer, this timepiece is genuine, brand new, and supplied with a full 3-year Seiko manufacturer’s warranty for complete peace of mind. Discover the Seiko Prospex Sumo SPB103J and explore an extensive range of Seiko Prospex, Seiko Presage, Seiko Astron, Seiko Sports, Seiko Coutura, and Grand Seiko watches at Linda & Co., online or in-store across Australia.
