The Seiko Prospex Fieldmaster Navigator Timer SBEJ015 (SPB411) faithfully revives the spirit of the legendary 6117-8000 Navigator Timer while introducing modern mechanical capability. Combining vintage-inspired design with contemporary functionality, it appeals equally to seasoned Seiko collectors and enthusiasts discovering the Navigator Timer legacy for the first time.
Powered by the Caliber 6R54, the SBEJ015 (SPB411) features an independent GMT function that allows convenient tracking of a second time zone without disrupting local timekeeping. A robust 72-hour power reserve further enhances its practicality for travel and daily wear.
Built for exploration, the watch offers 200 metres of water resistance and durable modern construction, while retaining the balanced proportions and timeless character that made the original Navigator Timer so respected among collectors. Limited to 4,000 pieces worldwide, it stands as one of the most compelling heritage-inspired GMT releases in the modern Prospex collection.
Blending historical significance, everyday versatility, and true traveller's functionality, the SBEJ015 (SPB411) represents a modern continuation of Seiko's Navigator Timer lineage. For collectors seeking an authentic Japanese mechanical GMT with genuine historical roots, few modern Prospex models deliver such a convincing balance of past and present.
SPB411 Specifications:
Movement Type: Automatic with manual winding Caliber: 6R54 Precision: +25 to -15 seconds per day Power reserve: Approx. 72 hours(3 days) Frequency: 21,600 vibrations per hour (6 beats per second) Jewel: 24
Exterior Case Material: Stainless steel (super hard coating) Case Size: Thickness:12.6mm; Diameter: 38.5mm; Lug-to-lug:45.2mm Crystal: Box-shaped sapphire crystal Crystal Coating: Anti-reflective coating on the inner surface LumiBrite: LumiBrite on hands, index(es), and bezel Clasp: Three-fold clasp with push-button release Distance between lugs: 19
Other Details Water Resistance: 10 bar Magnetic Resistance: 4,800 A/m Weight: 131.0
Features LIMITED EDITION on the case back Rotating bezel Screw case back 24-hour hand (dual time display function) Stop-seconds hand function
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