Seiko Cal. 6391 - 691

The Seiko 6391-691 represents an important milestone in Seiko's 1968 lineup. It features a Cream dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-14ecc64245db]

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Cream

Jewels

32j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1968

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