Seiko Cal. 6643 - 183

This Automatic model from 1989 features a 44mm Titanium case. The Coin-Edge bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-a64f1b95a39e]

Also known as: Tuna, Emperor

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Green

Jewels

36j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1989

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