Seiko Cal. 5639 - 894

The Seiko 5639-894 represents an important milestone in Seiko's 1998 lineup. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-910e6e36b5ad]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Black

Jewels

26j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1998

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