Seiko Cal. 5678 - 941

The Seiko 5678-941 represents an important milestone in Seiko's 1987 lineup. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-79e6cfb9ab15]

Also known as: Monster, Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1987

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