Seiko Cal. 5638 - 404

The Seiko 5638-404 represents an important milestone in Seiko's 1991 lineup. It features a Silver dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-fe62a290166c]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

37mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Silver

Jewels

31j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1991

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