Seiko Cal. 6646 - 840

This Quartz model from 1981 features a 44mm PVD Black case. The Coin-Edge bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-c12f6074d1e5]

Also known as: Sportsmatic, Crown

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

44mm

Case Thickness

14.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Burgundy

Jewels

24j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1981

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