Seiko Cal. 6658 - 638

The Seiko 6658-638 represents an important milestone in Seiko's 1992 lineup. Powered by the 6658 caliber with 34j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-851dfc6b2a15]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1992

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