Seiko Cal. 5643 - 326

This Automatic model from 1965 features a 40mm PVD Black case. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-4c66b7b7670f]

Also known as: Sumo, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Silver

Jewels

26j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1965

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