Seiko Cal. 4540 - 156

This Automatic model from 1969 features a 36mm Hardlex-Coated Steel case. Powered by the 4540 caliber with 27j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-75c4d58165e2]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

14.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

27j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1969

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