Seiko Cal. 6637 - 321

The 6637-321 is a sought-after Solar piece from Seiko's golden era. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-19c858eb2ef5]

Also known as: Crown

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

41mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1971

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