Seiko SPB409J1 Limited Edition GMT Alpinist Automatic Watch

The Seiko SPB409J1 is one of the most sought-after releases in Seiko's modern Prospex lineup. Combining the legendary Alpinist heritage with true GMT functionality, this limited-edition model is designed for adventurers, travelers, and collectors who appreciate premium craftsmanship and practical utility.

Powered by Seiko's advanced mechanical GMT movement, the SPB409J1 offers an impressive 72-hour power reserve and a dedicated 24-hour hand for tracking a second time zone. Its rugged yet refined design is enhanced by a domed sapphire crystal, Diamond Shield coating, compass bezel, and an exhibition case back that showcases the movement within.

As a Limited Edition release, the SPB409J1 has quickly become a favorite among enthusiasts looking for a unique and highly collectible GMT sports watch.

Key Features

✓ Limited Edition Model
✓ Authentic Seiko Prospex Release
✓ Mechanical GMT Movement
✓ 72-Hour Power Reserve
✓ Dual Time Zone Function
✓ Domed Sapphire Crystal
✓ Diamond Shield Coating
✓ Built-In Compass Bezel
✓ Exhibition Case Back
✓ 200M Water Resistance
✓ Additional Calfskin Strap Included

Technical Specifications

Movement

• Mechanical Automatic Movement

• Manual Winding Capability

• 24 Jewels

• Accuracy: +25 / -15 Seconds Per Day

• Approx. 72-Hour Power Reserve

• GMT / Dual Time Zone Display

• 24-Hour Hand

• Stop Seconds Function (Hacking)

Case & Crystal

• Stainless Steel Case

• Diamond Shield Coating

• Diameter: 39.5mm

• Thickness: 13.6mm

• Lug-to-Lug: 46.4mm

• Domed Sapphire Crystal

• Inner Anti-Reflective Coating

Bracelet & Clasp

• Stainless Steel Bracelet

• Single-Push Three-Fold Clasp

Additional Features

• LIMITED EDITION Engraving on Case Back

• Compass Function via Rotating Inner Ring

• Screw-Down Crown

• Stainless Steel & Glass Exhibition Case Back

• Additional Calfskin Strap Included

• LumiBrite on Hands and Hour Markers

• Anti-Magnetic Construction

• Water Resistance: 20 Bar (200M)

• Weight: 156g

Why Collectors Love the SPB409J1

The SPB409J1 represents everything enthusiasts love about the Alpinist collection: compact proportions, adventure-ready functionality, and unmistakable character. The addition of a true GMT complication makes this model even more versatile, while the 72-hour power reserve places it among Seiko's most practical mechanical offerings.

Collectors are particularly drawn to the SPB409J1 because of its limited production, premium finishing, and unique combination of GMT and compass functionality. The inclusion of both a stainless steel bracelet and calfskin strap allows owners to easily switch between sporty and refined looks.

With demand consistently exceeding supply, the SPB409J1 has become one of the hottest Prospex references among collectors worldwide.

Why Buy From Tokyo Treasures?

Tokyo Treasures specializes in authentic Japanese and international Seiko releases sourced directly from trusted suppliers worldwide.

✓ 100% Authentic Guaranteed
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✓ Limited Edition Availability

Collector's Note: The SPB409J1 is a Limited Edition model. Once dealer allocations are sold out, sourcing additional units becomes increasingly difficult, making this one of the most collectible modern Alpinist GMT references.