Seiko Cal. 6691 - 311

This Quartz model from 1967 features a 36mm Titanium case. Powered by the 6691 caliber with 23j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-2ed6049e06d0]

Also known as: Baby Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

36mm

Case Thickness

14.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1967

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