Seiko Prospex Marine Master 1968 Heritage Diver’s 300M Mechanical Automatic SLA077

Seiko Prospex Marinemaster 1968 Heritage Diver’s 300M Mechanical Automatic White Dial SLA077 (JDM Version Model: SBDX063) Where the Horizon Meets the Deep! For decades, Seiko's professional dive watches have been defined by strength, purpose, and unwavering reliability beneath the waves. The SLA077 (SBDX063) Marinemaster preserves that heritage while introducing a distinctive new character, inspired by sunlight reflecting across the open sea. At its center lies a striking white textured dial, a sharp departure from the dark dials traditionally associated with professional divers. The surface captures the ever-changing interplay between light and water, while bold hands and indexes filled with LumiBrite ensure exceptional legibility in the harshest environments. Protected by a dual-curved sapphire crystal with anti-reflective coating, the dial remains crisp and highly readable whether on deck or deep below the surface. Engineered for serious underwater use, the SLA077 delivers 300m air-diving water resistance and the robust build expected from the Marinemaster name. Its case takes inspiration from Seiko's legendary 1968 diver, combining powerful geometry with distortion-free mirror finishing that showcases the brand's renowned craftsmanship. The redesigned bezel and crown feature enhanced knurling for improved grip and operation, even while wearing diving gloves. Hidden beneath the exterior is one of the model's most important technical advancements. Rather than threading the crown directly into the case, Seiko employs a dedicated threaded crown pipe structure, improving long-term durability and reinforcing the watch's professional-grade integrity. This thoughtful engineering reflects the same philosophy that has guided Seiko's dive watch development for more than sixty years: create instruments that perform when it matters most. While many dive watches are designed to disappear into the darkness of the ocean, the SLA077 stands out by embracing the light above it. It offers the same uncompromising capability that defines the Marinemaster lineage, presented through a dial that feels fresh, confident, and unmistakably distinctive. The SLA077 isn't for those who follow the tide. It's for those who chart their own course. Available now at WatchOutz.com, where legends surface. SLA077 Specifications: Movement Caliber: 8L35 Type: Mechanical Automatic with manual winding Accuracy: +15 to -10 seconds per day Duration: Approx. 50 hours (fully wound) Functions: 24-hour hand (dual time display function); stop second-hand function Jewel: 26 Frequency: 28,800 vph (8 vph) Second-hand stop function Calendar (date) function Exterior Case Material: Stainless Steel Case Coating: DiaShield Case Size: Thickness: 13.4mm; Width: 42.6mm; Height: 49.3mm Crystal Material: Dual-Curve Sapphire Crystal Coating: Anti-Reflective Coating on the Interior Lumibrite: Yes (Hands, Indexes, Bezel) Clasp: One-Push Diver Extender Lug width: 20mm Other Details Water Resistance: 300m (air diving water resistance) Magnetic Resistance: Yes Weight: 196.0g Unidirectional rotating bezel Screw-lock crown Double-lock clasp Screw-caseback * Kindly note that the displayed image is either a graphic representation or a prototype and may not precisely reflect the final product. Color variations may occur due to differences in browsers, display settings, or devices used for viewing. Additionally, the orientation of the case back in the actual product may differ from what is shown in the photograph.