Seiko Cal. 0740 - 328

This Spring Drive model from 1992 features a 40mm Titanium case. Powered by the 0740 caliber with 28j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-e9250f585a12]

Also known as: Sumo, UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Black

Jewels

28j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1992

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