Seiko Cal. 6637 - 415

This Quartz model from 1977 features a 40mm PVD Black case. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-3db8e9507879]

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

Cream

Jewels

19j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1977

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