Seiko Cal. 6387 - 641

This Spring Drive model from 1980 features a 41mm Two-Tone case. With its 22mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-db234089f5e9]

Also known as: Shogun, World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Cream

Jewels

21j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1980

Related Models

• Seiko 6663-518
• Seiko 6290-272
• Seiko 3839-394
• Seiko 6295-232
• Seiko 6165-150
• Seiko 5640-843
• Seiko 4451-755
• Seiko 7065-431
• Seiko 5269-135
• Seiko 5265-756
• Seiko 5647-262
• Seiko 3830-203