Seiko Cal. 6178 - 631

The Seiko 6178-631 represents an important milestone in Seiko's 1972 lineup. It features a Green dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-902edc56a47b]

Also known as: Helmet, Silverwave

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

60m

Dial Color

Green

Jewels

26j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1972

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