Seiko Cal. 0731 - 938

The Seiko 0731-938 represents an important milestone in Seiko's 1974 lineup. Powered by the 0731 caliber with 23j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-b44b3ae1a479]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

White

Jewels

23j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1974

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