Seiko Cal. 5640 - 408

The 5640-408 is a sought-after Automatic piece from Seiko's golden era. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-d4ab9446fe33]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1970

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