Seiko Cal. 5631 - 611

This Quartz model from 1982 features a 34mm Hardlex-Coated Steel case. It features a Black dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-7716a3077adb]

Also known as: Monster, Helmet

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1982

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