Seiko Cal. 6271 - 550

This Spring Drive model from 1978 features a 37mm Titanium case. It features a Black dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-f53db8ec21f7]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Black

Jewels

19j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1978

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