Seiko Cal. 0740 - 645

This Solar model from 1973 features a 38mm Two-Tone case. Powered by the 0740 caliber with 34j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-d4b2eaad0609]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

38mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

Silver

Jewels

34j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1973

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