Seiko Cal. 7138 - 157

The Seiko 7138-157 represents an important milestone in Seiko's 1984 lineup. Powered by the 7138 caliber with 36j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-1b7df17dcbab]

Also known as: Navigator, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

Burgundy

Jewels

36j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1984

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