Seiko Cal. 6618 - 412

The Seiko 6618-412 represents an important milestone in Seiko's 1979 lineup. It features a Green dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-dc06059fddc4]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Green

Jewels

29j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1979

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