Seiko Cal. 6311 - 747

This Quartz model from 1979 features a 44mm PVD Black case. Powered by the 6311 caliber with 25j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-4c5b19841524]

Also known as: Tuna, Sea Horse

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

44mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1979

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