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Seiko Prospex

SPB377J1 [N]

SPB377J1 [N]

$1,690
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Seiko Prospex x Automatic ft. Alpinist aka GMT Men Formal Round 200m Water Resistant Watch SPB377J1 SPB377 SPB-377 SPB-377J1

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) display
Stop second hand function (hacking mechanism)
Regular timekeeping (analog display)

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