Seiko Cal. 0731 - 561

The Seiko 0731-561 represents an important milestone in Seiko's 1997 lineup. With its 18mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-99466c775082]

Also known as: Sumo, Emperor

Specifications

Movement

Solar

Case Material

Titanium

Case Width

39mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Burgundy

Jewels

25j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1997

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