Seiko Cal. 4494 - 751

This Spring Drive model from 1970 features a 40mm Stainless Steel case. Powered by the 4494 caliber with 36j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-a15b094051e6]

Also known as: Monster, Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

10.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1970

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