Seiko Cal. 3881 - 231

The Seiko 3881-231 represents an important milestone in Seiko's 1987 lineup. It features a Navy dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-8d67b763a3f1]

Also known as: Helmet, Flighty

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1987

Related Models

• Seiko 5650-328
• Seiko 6355-669
• Seiko 5674-279
• Seiko 6399-359
• Seiko 6693-103
• Seiko 5222-387
• Seiko 5632-404
• Seiko 7077-681
• Seiko 0753-328
• Seiko 5634-476
• Seiko 7174-841
• Seiko 7184-468