Seiko Cal. 6658 - 613

The Seiko 6658-613 represents an important milestone in Seiko's 1967 lineup. Powered by the 6658 caliber with 26j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-0ce0c86d82e7]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

14.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

26j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1967

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