Seiko Cal. 6399 - 617

The Seiko 6399-617 represents an important milestone in Seiko's 1979 lineup. It features a Green dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-61030a50c409]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

37mm

Case Thickness

11.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

50m

Dial Color

Green

Jewels

25j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1979

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