Seiko Cal. 5231 - 350

This Solar model from 1981 features a 38mm PVD Black case. With its 22mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-bd3a4ab949d7]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1981

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