Seiko Cal. 5616 - 640

This Quartz model from 1974 features a 41mm Hardlex-Coated Steel case. It features a Navy dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-ee5a00eda76e]

Also known as: Bellmatic, Flighty

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1974

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