Seiko Cal. 4556 - 729

This Hand-Winding model from 1971 features a 40mm Hardlex-Coated Steel case. It features a Green dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-dc90caacb845]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

13.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

33j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1971

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