Seiko Cal. 7157 - 812

The Seiko 7157-812 represents an important milestone in Seiko's 1973 lineup. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-83c263862912]

Also known as: Navigator, Flighty

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1973

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