Seiko Cal. 6331 - 452

The Seiko 6331-452 represents an important milestone in Seiko's 1975 lineup. With its 20mm lug width and 14.8mm profile, it sits comfortably on most wrists. [seikata-wm-91c766900d8c]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1975

Related Models

• Seiko 7018-665
• Seiko 7036-679
• Seiko 4561-338
• Seiko 4576-808
• Seiko 5289-792
• Seiko 6175-671
• Seiko 0786-573
• Seiko 7094-179
• Seiko 7132-299
• Seiko 5255-918
• Seiko 6374-610
• Seiko 7025-699