Seiko Cal. 6689 - 553

This Quartz model from 1976 features a 40mm PVD Black case. Powered by the 6689 caliber with 36j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-676d05909639]

Also known as: Tuna, World Timer

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

80m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1976

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