Seiko Cal. 6691 - 761

The 6691-761 is a sought-after Spring Drive piece from Seiko's golden era. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-e91e432854c8]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1975

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