Seiko Cal. 6628 - 655

This Hand-Winding model from 1966 features a 35mm Hardlex-Coated Steel case. Powered by the 6628 caliber with 22j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-446319daade7]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

8.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

170m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1966

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