Seiko Cal. 6691 - 311

The Seiko 6691-311 represents an important milestone in Seiko's 1974 lineup. It features a Cream dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-80596e5bbfca]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Cream

Jewels

28j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1974

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