Seiko Cal. 6642 - 648

Released in 1975, the Cal. 6642 with design code 648 was part of Seiko's domestic market collection. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-ed50ca005b09]

Also known as: Golden Tuna

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Burgundy

Jewels

29j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1975

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