Seiko Cal. 6138 - 556

The Seiko 6138-556 represents an important milestone in Seiko's 1978 lineup. It features a Green dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-9ac1f752234b]

Also known as: Samurai

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Green

Jewels

24j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1978

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