Seiko Cal. 5231 - 615

The Seiko 5231-615 represents an important milestone in Seiko's 1969 lineup. It features a Black dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-287765ad3855]

Also known as: Sumo, Panda

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

12.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1969

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