Seiko Cal. 6391 - 408

This Spring Drive model from 1989 features a 40mm Titanium case. It features a Green dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-a7581bb12bb3]

Also known as: Silverwave, Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1989

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