Seiko Prospex Alpinist Automatik GMT SPB377

Seiko Prospex Alpinist GMT SPB377 – Robust GMT automatic watch for explorers and travelers

Traditional Alpinist with modern functionality

The Seiko Prospex Alpinist GMT SPB377 combines the legendary Alpinist tradition with a practical GMT function for modern adventures. Its classic design, robust construction, and powerful automatic movement make it a versatile companion for everyday life, travel, and outdoor activities.

With its balanced case diameter of 39.5 mm, the watch offers high wearing comfort and a harmonious presence on the wrist.

Second time zone at a glance

The integrated GMT function allows simultaneous display of a second time zone and makes the SPB377 especially interesting for frequent travelers and internationally active wearers. The additional 24-hour hand provides quick and intuitive orientation.

This way, you can keep track of different time zones at any time while on the go.

Powerful caliber with 72-hour power reserve

Inside works the modern Seiko caliber 6R54 with automatic winding and additional manual winding option. The power reserve of up to 72 hours offers high flexibility and ensures that the watch continues to run reliably even after several days without being worn.

The stop-seconds function also allows for precise time setting.

High-quality materials for demanding use

The stainless steel case with super-hard coating protects the watch from everyday wear and increases scratch resistance. The curved sapphire crystal with inner anti-reflective coating ensures optimal readability and emphasizes the high-quality character of the model.

LumiBrite on hands and indices ensures excellent visibility in darkness and low light conditions.

Typical Alpinist features

The internal compass ring is one of the characteristic features of the Alpinist collection and supports orientation during outdoor adventures. The equipment is complemented by a screw-down crown, a screw-down exhibition case back, and water resistance up to 20 bar.

Technical highlights

• Reference: SPB377
• Collection: Prospex Land Alpinist GMT
• Caliber: Seiko Caliber 6R54
• Movement: Automatic with manual winding function
• Power reserve: approx. 72 hours
• Accuracy: -15 to +25 seconds per day
• Jewels: 24
• Functions: GMT, second time zone, hacking seconds
• Case: Stainless steel with super-hard coating
• Diameter: 39.5 mm
• Height: 13.6 mm
• Length: 46.4 mm
• Glass: Domed sapphire crystal
• Anti-reflective coating: Inner anti-reflective coating
• LumiBrite: Hands and indices
• Strap: Calf leather
• Clasp: Safety folding clasp
• Water resistance: 20 bar
• Magnetic resistance: 4,800 A/m
• Inner rotating ring with compass
• Screw-down crown
• Screw-down exhibition case back

Ready for any adventure

The Seiko Prospex Alpinist GMT SPB377 combines classic Alpinist elements with modern GMT technology and robust Prospex quality. A versatile automatic watch for those who seek reliability, functionality, and timeless design in a high-quality timepiece.