Seiko Cal. 5634 - 922

This Quartz model from 1978 features a 46mm Hardlex-Coated Steel case. It features a Black dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-88339bfa7b6d]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Black

Jewels

35j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1978

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