Seiko Cal. 5638 - 434

The Seiko 5638-434 represents an important milestone in Seiko's 1997 lineup. It features a Navy dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-657220113bc3]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1997

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