Seiko Cal. 5631 - 271

This Quartz model from 1985 features a 45mm Hardlex-Coated Steel case. Powered by the 5631 caliber with 19j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-28f0bb082450]

Also known as: Silverwave, World Timer

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

14.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1985

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