Seiko Cal. 6657 - 649

This Hand-Winding model from 1967 features a 36mm Hardlex-Coated Steel case. Powered by the 6657 caliber with 35j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-8f471ebf6814]

Also known as: Goldfeather, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1967

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