Seiko Cal. 5638 - 731

This Quartz model from 1977 features a 46mm Stainless Steel case. Powered by the 5638 caliber with 17j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-b6bb06ed3fab]

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1977

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