Seiko Cal. 6657 - 776

This Spring Drive model from 1965 features a 43mm Hardlex-Coated Steel case. Powered by the 6657 caliber with 33j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-65ee5d46b003]

Also known as: Panda

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

White

Jewels

33j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1965

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