Seiko Cal. 7090 - 634

This Spring Drive model from 1968 features a 42mm Hardlex-Coated Steel case. Powered by the 7090 caliber with 35j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-bcee3b0ee878]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Black

Jewels

35j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1968

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