Seiko Cal. 4537 - 131

This Quartz model from 1985 features a 39mm Stainless Steel case. Powered by the 4537 caliber with 20j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-249f9bea562d]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1985

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