Seiko Cal. 6633 - 806

This Quartz model from 1971 features a 36mm PVD Black case. Powered by the 6633 caliber with 18j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-8913426784a2]

Also known as: Monster, Helmet

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

36mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

18j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1971

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