Seiko Cal. 6668 - 645

The 6668-645 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6668 caliber with 36j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-e893803d10f8]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

36j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1998

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