Seiko Cal. 5231 - 918

This Spring Drive model from 1994 features a 38mm Hardlex-Coated Steel case. With its 19mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-ea6658470fc5]

Also known as: Bullhead, Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Burgundy

Jewels

25j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1994

Related Models

• Seiko 4477-804
• Seiko 7014-681
• Seiko 4481-201
• Seiko 6211-929
• Seiko 3817-752
• Seiko 4596-885
• Seiko 6682-783
• Seiko 3892-558
• Seiko 7128-763
• Seiko 5242-243
• Seiko 6175-794
• Seiko 0728-951