Seiko Cal. 5231 - 906

This Hand-Winding model from 1967 features a 45mm Hardlex-Coated Steel case. Powered by the 5231 caliber with 23j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-cc40ca32b591]

Also known as: Turtle, Monster

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

140m

Dial Color

White

Jewels

23j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1967

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