Seiko Cal. 4425 - 323

This Hand-Winding model from 1977 features a 37mm PVD Black case. Powered by the 4425 caliber with 36j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-e196e8b94178]

Also known as: Sumo, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

Cream

Jewels

36j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1977

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