Seiko Cal. 6637 - 358

The 6637-358 is a sought-after Solar piece from Seiko's golden era. The Fixed bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-c91d77fb9a00]

Specifications

Movement

Solar

Case Material

Titanium

Case Width

36mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1975

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