Seiko Cal. 5611 - 631

This Hand-Winding model from 1980 features a 35mm PVD Black case. It features a Navy dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-7a3582ab1836]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Navy

Jewels

22j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1980

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