Seiko Cal. 7131 - 172

The Seiko 7131-172 represents an important milestone in Seiko's 1979 lineup. It features a Green dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-a9fc09e45922]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

42mm

Case Thickness

8.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1979

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