Seiko Cal. 0727 - 378

This Automatic model from 1977 features a 40mm PVD Black case. Powered by the 0727 caliber with 36j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-4cee56ac3b9d]

Also known as: Crown, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1977

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