Seiko Cal. 5610 - 736

This Spring Drive model from 1972 features a 43mm Hardlex-Coated Steel case. It features a Navy dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-33e75cc9bab8]

Also known as: Monster, Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1972

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