Seiko Cal. 5644 - 756

This Hand-Winding model from 1975 features a 41mm Two-Tone case. It features a Champagne dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-95afc7d0242c]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Champagne

Jewels

36j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1975

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