Seiko Cal. 7139 - 561

The Seiko 7139-561 represents an important milestone in Seiko's 1996 lineup. It features a Black dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-9c7bd7cd4f4b]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

14.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1996

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