Seiko Cal. 6661 - 614

This Spring Drive model from 1968 features a 45mm Hardlex-Coated Steel case. Powered by the 6661 caliber with 20j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-1e1f99eab2ab]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

14.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

Silver

Jewels

20j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1968

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