Seiko Cal. 4491 - 861

The Seiko 4491-861 represents an important milestone in Seiko's 1972 lineup. It features a Blue Sunburst dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-be620a6d540f]

Also known as: Sumo, Crown

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

14.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1972

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