Seiko Cal. 5665 - 331

The Seiko 5665-331 represents an important milestone in Seiko's 1969 lineup. It features a Green dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-42b43306343e]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Green

Jewels

33j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1969

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