Seiko Cal. 4537 - 684

This Automatic model from 1977 features a 38mm Hardlex-Coated Steel case. It features a White dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-c3e8f13ae154]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

14.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1977

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