Seiko Cal. 6643 - 985

This Spring Drive model from 1977 features a 41mm PVD Black case. Powered by the 6643 caliber with 25j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-fb3a5e12d3ba]

Also known as: Pogue

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

White

Jewels

25j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1977

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