Seiko Cal. 5691 - 180

This Solar model from 1972 features a 36mm Hardlex-Coated Steel case. Powered by the 5691 caliber with 26j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-633b224c9dcf]

Also known as: Monster, UFO

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Silver

Jewels

26j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1972

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