Seiko Cal. 6387 - 427

This Spring Drive model from 1972 features a 39mm Stainless Steel case. With its 20mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-c46617d5866c]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Cream

Jewels

36j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1972

Related Models

• Seiko 6247-357
• Seiko 3824-353
• Seiko 5637-728
• Seiko 0745-787
• Seiko 5654-892
• Seiko 3825-713
• Seiko 5668-882
• Seiko 5651-446
• Seiko 4422-553
• Seiko 6392-998
• Seiko 6216-477
• Seiko 6350-818