Seiko Cal. 6617 - 427

The Seiko 6617-427 represents an important milestone in Seiko's 1971 lineup. It features a Navy dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-dd73397cdf33]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Navy

Jewels

26j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1971

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