Seiko Cal. 6691 - 828

This Spring Drive model from 1970 features a 46mm Hardlex-Coated Steel case. It features a Cream dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-0154eaf268d8]

Also known as: Bullhead, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Cream

Jewels

17j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1970

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