Seiko Cal. 5642 - 403

The Seiko 5642-403 represents an important milestone in Seiko's 1979 lineup. It features a Navy dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-3b85d97d5c1d]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Navy

Jewels

25j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1979

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