Seiko Cal. 5640 - 645

This Solar model from 1998 features a 39mm Two-Tone case. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-cdee55ef86bc]

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

39mm

Case Thickness

12.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Green

Jewels

20j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1998

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