Seiko Cal. 3881 - 640

This Automatic model from 1970 features a 38mm Stainless Steel case. Powered by the 3881 caliber with 19j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-d0afa0b08897]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

White

Jewels

19j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1970

Related Models

• Seiko 7155-488
• Seiko 6154-260
• Seiko 5280-449
• Seiko 7176-476
• Seiko 7062-922
• Seiko 7012-940
• Seiko 5685-221
• Seiko 5213-426
• Seiko 6261-161
• Seiko 7111-442
• Seiko 6195-601
• Seiko 6338-113