Seiko Cal. 5640 - 234

The 5640-234 is a sought-after Hand-Winding piece from Seiko's golden era. The Coin-Edge bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-fc86e54abf82]

Also known as: Shogun, Rally

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1976

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