Seiko Cal. 7131 - 688

The Seiko 7131-688 represents an important milestone in Seiko's 1996 lineup. With its 22mm lug width and 10.4mm profile, it sits comfortably on most wrists. [seikata-wm-1c91039dabd0]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

10.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Cream

Jewels

28j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1996

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