Seiko Cal. 0761 - 139

Released in 1976, the Cal. 0761 with design code 139 was part of Seiko's domestic market collection. With its 20mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-d21ac191ce64]

Also known as: Monster, Sumo

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Cream

Jewels

31j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1976

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