Seiko Cal. 6144 - 640

This Spring Drive model from 1967 features a 38mm Hardlex-Coated Steel case. It features a White dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-4ddfe4145bcb]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

14.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

White

Jewels

36j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1967

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