Seiko Cal. 6140 - 843

This Spring Drive model from 1968 features a 40mm PVD Black case. It features a Black dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-c8aac32dab27]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Black

Jewels

19j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1968

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