Seiko Cal. 7148 - 738

The Seiko 7148-738 represents an important milestone in Seiko's 1965 lineup. Powered by the 7148 caliber with 18j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-c3d96afed6a6]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1965

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