Seiko Cal. 5231 - 441

This Hand-Winding model from 1976 features a 44mm Hardlex-Coated Steel case. Powered by the 5231 caliber with 35j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-88997ef3199d]

Also known as: Turtle, Shogun

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Navy

Jewels

35j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1976

Related Models

• Seiko 4456-912
• Seiko 3839-211
• Seiko 5295-156
• Seiko 6278-206
• Seiko 6275-203
• Seiko 5625-411
• Seiko 6636-489
• Seiko 5635-615
• Seiko 5226-407
• Seiko 5662-653
• Seiko 6245-228
• Seiko 0771-977