Seiko Cal. 6691 - 411

The Seiko 6691-411 represents an important milestone in Seiko's 1980 lineup. It features a Black dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-6a9bc217a608]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Black

Jewels

33j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1980

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