Seiko Cal. 5665 - 311

The Seiko 5665-311 represents an important milestone in Seiko's 1972 lineup. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-02ec47bbe872]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

10.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

33j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1972

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