Seiko Cal. 6647 - 740

This Spring Drive model from 1974 features a 46mm Titanium case. Powered by the 6647 caliber with 32j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-daeaf1927dab]

Also known as: Pogue, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

14.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

70m

Dial Color

Burgundy

Jewels

32j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1974

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