Seiko Cal. 3872 - 401

This Automatic model from 1975 features a 45mm Stainless Steel case. Powered by the 3872 caliber with 35j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-242f0fd168ba]

Also known as: Monster, Bullhead

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Cream

Jewels

35j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1975

Related Models

• Seiko 0787-169
• Seiko 4466-536
• Seiko 3879-318
• Seiko 6236-254
• Seiko 4561-894
• Seiko 3886-532
• Seiko 6165-851
• Seiko 6370-775
• Seiko 6185-416
• Seiko 4540-185
• Seiko 6130-925
• Seiko 4545-580