Seiko Cal. 3861 - 537

This Spring Drive model from 1973 features a 45mm Hardlex-Coated Steel case. Powered by the 3861 caliber with 29j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-aff943498f3d]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Champagne

Jewels

29j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1973

Related Models

• Seiko 6332-442
• Seiko 4587-355
• Seiko 4437-970
• Seiko 3871-991
• Seiko 6258-514
• Seiko 3820-322
• Seiko 3892-443
• Seiko 7066-778
• Seiko 3819-118
• Seiko 7022-851
• Seiko 7178-605
• Seiko 6620-671