Seiko Cal. 6643 - 880

This Hand-Winding model from 1982 features a 36mm PVD Black case. It features a Black dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-eef4d12ff88d]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

14.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1982

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