Seiko Cal. 5631 - 522

This Quartz model from 1976 features a 45mm Hardlex-Coated Steel case. It features a White dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-1d45a1cbcd3f]

Also known as: Bellmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1976

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