Seiko Cal. 4527 - 379

This Hand-Winding model from 1977 features a 45mm PVD Black case. Powered by the 4527 caliber with 25j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-d7e118367bef]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1977

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