Seiko Cal. 6633 - 160

This Hand-Winding model from 1975 features a 35mm Hardlex-Coated Steel case. Powered by the 6633 caliber with 18j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-bbe6bc6feafd]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

18j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1975

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