Seiko Cal. 6634 - 487

This Automatic model from 1982 features a 36mm PVD Black case. Powered by the 6634 caliber with 28j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-33175e1a1ca8]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

28j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1982

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