Seiko Cal. 3872 - 520

The Seiko 3872-520 represents an important milestone in Seiko's 1975 lineup. It features a Navy dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-f9333312a56a]

Also known as: Bellmatic, Crown

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

14.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

28j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1975

Related Models

• Seiko 7120-622
• Seiko 4498-259
• Seiko 6185-818
• Seiko 0741-387
• Seiko 4538-421
• Seiko 0717-594
• Seiko 4521-208
• Seiko 0770-998
• Seiko 7196-841
• Seiko 4593-828
• Seiko 4561-293
• Seiko 4410-229