Seiko Cal. 6663 - 831

The 6663-831 is a sought-after Solar piece from Seiko's golden era. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-c25bdf0cbeda]

Also known as: Bellmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

34mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1979

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