Seiko Cal. 5231 - 283

The Seiko 5231-283 represents an important milestone in Seiko's 1971 lineup. It features a Green dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-474bceac80c8]

Also known as: Turtle, Crown

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

11.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1971

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