Seiko Cal. 5640 - 424

The 5640-424 is a sought-after Automatic piece from Seiko's golden era. The Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-55db41ea0361]

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

190m

Dial Color

Green

Jewels

30j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1965

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