Seiko Cal. 5640 - 955

The 5640-955 is a sought-after Quartz piece from Seiko's golden era. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-71e3cb422d56]

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1979

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