Seiko Prospex x Automatic ft. Alpinist aka GMT Men Formal Round 200m Water Resistant Watch SPB379J1 SPB379 SPB-379 SPB-379J1 Explore new horizons with the Seiko Prospex Alpinist GMT, featuring dual-time functionality for global adventurers. These 42mm stainless steel watches combine the 6R54 movement (72h power reserve) with 200m water resistance, sapphire crystals, and compass-inspired designs. Perfect for travelers seeking rugged elegance with professional-grade performance. Caliber Number / Movement 6R54 (automatic with manual winding capacity) Power Reserve / Accuracy Approximately 72 hours (+25 to -15 seconds per day) Crystal Sapphire crystal (curved, anti-reflective coating) Luminous LumiBrite on hands and indexes Case / Band Material Stainless steel (super hard coating) case with leather (calfskin) band (three-fold clasp with push-button release) Water Resistance 200m / 20 bar Case Size Thickness: 13.6 mm Diameter: 39.5 mm Length: 46.4 mm Lug width: 20.0 mm Other Specifications Seiko Prospex x Automatic ft. Alpinist aka GMT Made in Japan Magnetic resistance (4,800 A/m) Rotating compass inner ring See-through case back Screw-down crown Screw case back 24 jewels Date and 24-hour (GMT dual time) display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)
