Seiko Cal. 6390 - 320

This Hand-Winding model from 1978 features a 36mm PVD Black case. Powered by the 6390 caliber with 36j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-58cf962bf2cd]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

15.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Cream

Jewels

36j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1978

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