Seiko Cal. 6623 - 740

This Automatic model from 1975 features a 45mm Titanium case. Powered by the 6623 caliber with 30j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-28a975b42308]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

30j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1975

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