Seiko Cal. 5231 - 185

The 5231-185 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5231 caliber with 18j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-7b6de58d6dd3]

Also known as: Turtle, Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Champagne

Jewels

18j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1977

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