Seiko Cal. 7157 - 434

The Seiko 7157-434 represents an important milestone in Seiko's 1975 lineup. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-3b5de9b4bf4c]

Also known as: Sumo, World Timer

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Black

Jewels

28j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1975

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