Seiko Cal. 5238 - 731

Released in 1966, the Cal. 5238 with design code 731 was part of Seiko's domestic market collection. Powered by the 5238 caliber with 21j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-efdaba239aac]

Also known as: UFO, Silverwave

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

11.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1966

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