Seiko Cal. 5610 - 537

This Spring Drive model from 1972 features a 43mm Hardlex-Coated Steel case. It features a Silver dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-e6c0c90b071a]

Also known as: Monster, Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

14.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

70m

Dial Color

Silver

Jewels

35j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1972

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