Seiko Cal. 6644 - 632

This Automatic model from 1979 features a 46mm PVD Black case. Powered by the 6644 caliber with 31j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-6929cb2fc07f]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

46mm

Case Thickness

13.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1979

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