Seiko Cal. 5665 - 711

The Seiko 5665-711 represents an important milestone in Seiko's 1977 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-9c91e1df6f9a]

Also known as: Sumo, Pogue

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1977

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